26672756421 has 8 divisors (see below), whose sum is σ = 35799196864. Its totient is φ = 17664076800.

The previous prime is 26672756417. The next prime is 26672756443. The reversal of 26672756421 is 12465727662.

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

It is not a de Polignac number, because 26672756421 - 2² = 26672756417 is a prime.

It is a super-2 number, since 2×26672756421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26672757421) 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, 29439676 + ... + 29440581.

It is an arithmetic number, because the mean of its divisors is an integer number (4474899608).

Almost surely, 2^26672756421 is an apocalyptic number.

It is an amenable number.

26672756421 is a deficient number, since it is larger than the sum of its proper divisors (9126440443).

26672756421 is a wasteful number, since it uses less digits than its factorization.

26672756421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58880411.

The product of its digits is 1693440, while the sum is 48.

The spelling of 26672756421 in words is "twenty-six billion, six hundred seventy-two million, seven hundred fifty-six thousand, four hundred twenty-one".