15875457851 has 24 divisors (see below), whose sum is σ = 17660652912. Its totient is φ = 14258552000.

The previous prime is 15875457841. The next prime is 15875457869.

15875457851 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 15875457851 - 2²² = 15871263547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15875457821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7172621 + ... + 7174833.

It is an arithmetic number, because the mean of its divisors is an integer number (735860538).

Almost surely, 2^15875457851 is an apocalyptic number.

15875457851 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15875457851 is a deficient number, since it is larger than the sum of its proper divisors (1785195061).

15875457851 is a wasteful number, since it uses less digits than its factorization.

15875457851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923 (or 2912 counting only the distinct ones).

The product of its digits is 7840000, while the sum is 56.

The spelling of 15875457851 in words is "fifteen billion, eight hundred seventy-five million, four hundred fifty-seven thousand, eight hundred fifty-one".