45975399640 has 32 divisors (see below), whose sum is σ = 104901622560. Its totient is φ = 18131142400.

The previous prime is 45975399629. The next prime is 45975399647. The reversal of 45975399640 is 4699357954.

45975399640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×45975399640² (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 (45975399647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8091421 + ... + 8097100.

It is an arithmetic number, because the mean of its divisors is an integer number (3278175705).

Almost surely, 2^45975399640 is an apocalyptic number.

45975399640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45975399640 is an abundant number, since it is smaller than the sum of its proper divisors (58926222920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45975399640 is a wasteful number, since it uses less digits than its factorization.

45975399640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16188603 (or 16188599 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 61.

The spelling of 45975399640 in words is "forty-five billion, nine hundred seventy-five million, three hundred ninety-nine thousand, six hundred forty".