74712535813 has 6 divisors (see below), whose sum is σ = 78851734854. Its totient is φ = 70780296744.

The previous prime is 74712535801. The next prime is 74712535823. The reversal of 74712535813 is 31853521747.

It can be written as a sum of positive squares in only one way, i.e., 37462763809 + 37249772004 = 193553^2 + 193002^2 .

It is a de Polignac number, because none of the positive numbers 2^k-74712535813 is a prime.

It is a super-3 number, since 3×74712535813³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74712535823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103479606 + ... + 103480327.

It is an arithmetic number, because the mean of its divisors is an integer number (13141955809).

Almost surely, 2^74712535813 is an apocalyptic number.

It is an amenable number.

74712535813 is a deficient number, since it is larger than the sum of its proper divisors (4139199041).

74712535813 is a wasteful number, since it uses less digits than its factorization.

74712535813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206959971 (or 206959952 counting only the distinct ones).

The product of its digits is 705600, while the sum is 46.

The spelling of 74712535813 in words is "seventy-four billion, seven hundred twelve million, five hundred thirty-five thousand, eight hundred thirteen".