45155252331 has 20 divisors (see below), whose sum is σ = 77090449392. Its totient is φ = 25803001008.

The previous prime is 45155252327. The next prime is 45155252357. The reversal of 45155252331 is 13325255154.

45155252331 is a `hidden beast` number, since 4 + 51 + 5 + 52 + 523 + 31 = 666.

It is not a de Polignac number, because 45155252331 - 2² = 45155252327 is a prime.

It is a super-2 number, since 2×45155252331² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45155252381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 39818880 + ... + 39820013.

Almost surely, 2^45155252331 is an apocalyptic number.

45155252331 is a deficient number, since it is larger than the sum of its proper divisors (31935197061).

45155252331 is an equidigital number, since it uses as much as digits as its factorization.

45155252331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79638912 (or 79638903 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The spelling of 45155252331 in words is "forty-five billion, one hundred fifty-five million, two hundred fifty-two thousand, three hundred thirty-one".