45497594538 has 120 divisors (see below), whose sum is σ = 112254468480. Its totient is φ = 13763098800.

The previous prime is 45497594497. The next prime is 45497594539. The reversal of 45497594538 is 83549579454.

45497594538 is a `hidden beast` number, since 4 + 5 + 4 + 9 + 7 + 5 + 94 + 538 = 666.

It is a super-2 number, since 2×45497594538² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45497594539) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 13543303 + ... + 13546661.

It is an arithmetic number, because the mean of its divisors is an integer number (935453904).

Almost surely, 2^45497594538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45497594538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56127234240).

45497594538 is an abundant number, since it is smaller than the sum of its proper divisors (66756873942).

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

45497594538 is a wasteful number, since it uses less digits than its factorization.

45497594538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086 (or 4066 counting only the distinct ones).

The product of its digits is 108864000, while the sum is 63.

The spelling of 45497594538 in words is "forty-five billion, four hundred ninety-seven million, five hundred ninety-four thousand, five hundred thirty-eight".