74691640513 has 8 divisors (see below), whose sum is σ = 89073260928. Its totient is φ = 61237866624.

The previous prime is 74691640511. The next prime is 74691640537. The reversal of 74691640513 is 31504619647.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74691640513 - 2¹ = 74691640511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74691640511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231961456 + ... + 231961777.

It is an arithmetic number, because the mean of its divisors is an integer number (11134157616).

Almost surely, 2^74691640513 is an apocalyptic number.

It is an amenable number.

74691640513 is a deficient number, since it is larger than the sum of its proper divisors (14381620415).

74691640513 is a wasteful number, since it uses less digits than its factorization.

74691640513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463923263.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 74691640513 in words is "seventy-four billion, six hundred ninety-one million, six hundred forty thousand, five hundred thirteen".