74679723540 has 72 divisors (see below), whose sum is σ = 233835883008. Its totient is φ = 19272185280.

The previous prime is 74679723473. The next prime is 74679723659. The reversal of 74679723540 is 4532797647.

74679723540 is a `hidden beast` number, since 7 + 4 + 6 + 7 + 97 + 2 + 3 + 540 = 666.

It is a super-2 number, since 2×74679723540² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6686152 + ... + 6697311.

Almost surely, 2^74679723540 is an apocalyptic number.

It is an amenable number.

74679723540 is an abundant number, since it is smaller than the sum of its proper divisors (159156159468).

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

74679723540 is a wasteful number, since it uses less digits than its factorization.

74679723540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13383509 (or 13383504 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 54.

The spelling of 74679723540 in words is "seventy-four billion, six hundred seventy-nine million, seven hundred twenty-three thousand, five hundred forty".