1554251043121 has 32 divisors (see below), whose sum is σ = 1838281927680. Its totient is φ = 1286621240256.

The previous prime is 1554251043091. The next prime is 1554251043127. The reversal of 1554251043121 is 1213401524551.

It is a cyclic number.

It is not a de Polignac number, because 1554251043121 - 2²¹ = 1554248945969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1554251043127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10245990 + ... + 10396576.

It is an arithmetic number, because the mean of its divisors is an integer number (57446310240).

Almost surely, 2^{1554251043121} is an apocalyptic number.

It is an amenable number.

1554251043121 is a deficient number, since it is larger than the sum of its proper divisors (284030884559).

1554251043121 is a wasteful number, since it uses less digits than its factorization.

1554251043121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151093.

The product of its (nonzero) digits is 24000, while the sum is 34.

Adding to 1554251043121 its reverse (1213401524551), we get a palindrome (2767652567672).

The spelling of 1554251043121 in words is "one trillion, five hundred fifty-four billion, two hundred fifty-one million, forty-three thousand, one hundred twenty-one".