74638079551 has 16 divisors (see below), whose sum is σ = 85935746304. Its totient is φ = 63500949504.

The previous prime is 74638079531. The next prime is 74638079561. The reversal of 74638079551 is 15597083647.

It is a cyclic number.

It is not a de Polignac number, because 74638079551 - 2⁵ = 74638079519 is a prime.

It is a super-2 number, since 2×74638079551² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74638079492 and 74638079501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74638079501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435816 + ... + 582418.

It is an arithmetic number, because the mean of its divisors is an integer number (5370984144).

Almost surely, 2^74638079551 is an apocalyptic number.

74638079551 is a deficient number, since it is larger than the sum of its proper divisors (11297666753).

74638079551 is a wasteful number, since it uses less digits than its factorization.

74638079551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147150.

The product of its (nonzero) digits is 6350400, while the sum is 55.

The spelling of 74638079551 in words is "seventy-four billion, six hundred thirty-eight million, seventy-nine thousand, five hundred fifty-one".