45515550431 has 32 divisors (see below), whose sum is σ = 51387436800. Its totient is φ = 40023244800.

The previous prime is 45515550419. The next prime is 45515550469. The reversal of 45515550431 is 13405551554.

It is a cyclic number.

It is not a de Polignac number, because 45515550431 - 2³⁴ = 28335681247 is a prime.

It is a super-2 number, since 2×45515550431² (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 (45515559431) 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, 19358906 + ... + 19361256.

It is an arithmetic number, because the mean of its divisors is an integer number (1605857400).

Almost surely, 2^45515550431 is an apocalyptic number.

45515550431 is a deficient number, since it is larger than the sum of its proper divisors (5871886369).

45515550431 is a wasteful number, since it uses less digits than its factorization.

45515550431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3059.

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 45515550431 in words is "forty-five billion, five hundred fifteen million, five hundred fifty thousand, four hundred thirty-one".