45531955391 has 16 divisors (see below), whose sum is σ = 49326133248. Its totient is φ = 41779768800.

The previous prime is 45531955387. The next prime is 45531955421. The reversal of 45531955391 is 19355913554.

It is a cyclic number.

It is not a de Polignac number, because 45531955391 - 2² = 45531955387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45531955361) 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 15 ways as a sum of consecutive naturals, for example, 3984476 + ... + 3995886.

It is an arithmetic number, because the mean of its divisors is an integer number (3082883328).

Almost surely, 2^45531955391 is an apocalyptic number.

45531955391 is a deficient number, since it is larger than the sum of its proper divisors (3794177857).

45531955391 is a wasteful number, since it uses less digits than its factorization.

45531955391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13222.

The product of its digits is 1822500, while the sum is 50.

The spelling of 45531955391 in words is "forty-five billion, five hundred thirty-one million, nine hundred fifty-five thousand, three hundred ninety-one".