16554422762421 has 8 divisors (see below), whose sum is σ = 22082369362464. Its totient is φ = 11031379002000.

The previous prime is 16554422762419. The next prime is 16554422762443. The reversal of 16554422762421 is 12426722445561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16554422762421 - 2¹ = 16554422762419 is a prime.

It is a super-3 number, since 3×16554422762421³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16554422762461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1225702026 + ... + 1225715531.

It is an arithmetic number, because the mean of its divisors is an integer number (2760296170308).

Almost surely, 2^{16554422762421} is an apocalyptic number.

It is an amenable number.

16554422762421 is a deficient number, since it is larger than the sum of its proper divisors (5527946600043).

16554422762421 is a wasteful number, since it uses less digits than its factorization.

16554422762421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451419811.

The product of its digits is 6451200, while the sum is 51.

The spelling of 16554422762421 in words is "sixteen trillion, five hundred fifty-four billion, four hundred twenty-two million, seven hundred sixty-two thousand, four hundred twenty-one".