74438361015 has 64 divisors (see below), whose sum is σ = 126882547200. Its totient is φ = 37194038784.

The previous prime is 74438361013. The next prime is 74438361047. The reversal of 74438361015 is 51016383447.

It is a happy number.

It is not a de Polignac number, because 74438361015 - 2¹ = 74438361013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74438361013) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6093904 + ... + 6106106.

It is an arithmetic number, because the mean of its divisors is an integer number (1982539800).

Almost surely, 2^74438361015 is an apocalyptic number.

74438361015 is a deficient number, since it is larger than the sum of its proper divisors (52444186185).

74438361015 is a wasteful number, since it uses less digits than its factorization.

74438361015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12656.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 74438361015 in words is "seventy-four billion, four hundred thirty-eight million, three hundred sixty-one thousand, fifteen".