45256641632 has 24 divisors (see below), whose sum is σ = 89166646800. Its totient is φ = 22611144064.

The previous prime is 45256641631. The next prime is 45256641637. The reversal of 45256641632 is 23614665254.

It is a happy number.

It is a super-2 number, since 2×45256641632² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45256641631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493907 + ... + 578322.

It is an arithmetic number, because the mean of its divisors is an integer number (3715276950).

Almost surely, 2^45256641632 is an apocalyptic number.

It is an amenable number.

45256641632 is a deficient number, since it is larger than the sum of its proper divisors (43910005168).

45256641632 is a wasteful number, since it uses less digits than its factorization.

45256641632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073558 (or 1073550 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 44.

The spelling of 45256641632 in words is "forty-five billion, two hundred fifty-six million, six hundred forty-one thousand, six hundred thirty-two".