73745262513 has 16 divisors (see below), whose sum is σ = 117656259840. Its totient is φ = 45381699792.

The previous prime is 73745262509. The next prime is 73745262607. The reversal of 73745262513 is 31526254737.

73745262513 is a `hidden beast` number, since 7 + 3 + 7 + 4 + 5 + 2 + 625 + 13 = 666.

It is not a de Polignac number, because 73745262513 - 2² = 73745262509 is a prime.

It is a super-2 number, since 2×73745262513² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73745264513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105049881 + ... + 105050582.

It is an arithmetic number, because the mean of its divisors is an integer number (7353516240).

Almost surely, 2^73745262513 is an apocalyptic number.

It is an amenable number.

73745262513 is a deficient number, since it is larger than the sum of its proper divisors (43910997327).

73745262513 is a wasteful number, since it uses less digits than its factorization.

73745262513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210100485 (or 210100479 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 45.

The spelling of 73745262513 in words is "seventy-three billion, seven hundred forty-five million, two hundred sixty-two thousand, five hundred thirteen".