74764901861 has 24 divisors (see below), whose sum is σ = 84784573440. Its totient is φ = 65773895616.

The previous prime is 74764901807. The next prime is 74764901873. The reversal of 74764901861 is 16810946747.

It is a de Polignac number, because none of the positive numbers 2^k-74764901861 is a prime.

It is a super-2 number, since 2×74764901861² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74764901891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1041980 + ... + 1111418.

It is an arithmetic number, because the mean of its divisors is an integer number (3532690560).

Almost surely, 2^74764901861 is an apocalyptic number.

It is an amenable number.

74764901861 is a deficient number, since it is larger than the sum of its proper divisors (10019671579).

74764901861 is a wasteful number, since it uses less digits than its factorization.

74764901861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69765 (or 69752 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 74764901861 in words is "seventy-four billion, seven hundred sixty-four million, nine hundred one thousand, eight hundred sixty-one".