15445254451 has 24 divisors (see below), whose sum is σ = 17896692800. Its totient is φ = 13282671600.

The previous prime is 15445254439. The next prime is 15445254457.

15445254451 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 15445254451 - 2¹³ = 15445246259 is a prime.

It is a super-2 number, since 2×15445254451² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15445254457) 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, 1694416 + ... + 1703506.

Almost surely, 2^15445254451 is an apocalyptic number.

15445254451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15445254451 is a deficient number, since it is larger than the sum of its proper divisors (2451438349).

15445254451 is a wasteful number, since it uses less digits than its factorization.

15445254451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9871 (or 9860 counting only the distinct ones).

The product of its digits is 320000, while the sum is 40.

The spelling of 15445254451 in words is "fifteen billion, four hundred forty-five million, two hundred fifty-four thousand, four hundred fifty-one".