74920652287 has 4 divisors (see below), whose sum is σ = 80683779400. Its totient is φ = 69157525176.

The previous prime is 74920652267. The next prime is 74920652291. The reversal of 74920652287 is 78225602947.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74920652287 is a prime.

It is a super-2 number, since 2×74920652287² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74920652267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2881563537 + ... + 2881563562.

It is an arithmetic number, because the mean of its divisors is an integer number (20170944850).

Almost surely, 2^74920652287 is an apocalyptic number.

74920652287 is a deficient number, since it is larger than the sum of its proper divisors (5763127113).

74920652287 is a wasteful number, since it uses less digits than its factorization.

74920652287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5763127112.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 74920652287 in words is "seventy-four billion, nine hundred twenty million, six hundred fifty-two thousand, two hundred eighty-seven".