15442861057 has 8 divisors (see below), whose sum is σ = 16662579584. Its totient is φ = 14227686288.

The previous prime is 15442861003. The next prime is 15442861073. The reversal of 15442861057 is 75016824451.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15442861057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15442861757) 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, 1128873 + ... + 1142470.

It is an arithmetic number, because the mean of its divisors is an integer number (2082822448).

Almost surely, 2^15442861057 is an apocalyptic number.

It is an amenable number.

15442861057 is a deficient number, since it is larger than the sum of its proper divisors (1219718527).

15442861057 is a wasteful number, since it uses less digits than its factorization.

15442861057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271879.

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 15442861057 in words is "fifteen billion, four hundred forty-two million, eight hundred sixty-one thousand, fifty-seven".