74657689081 has 8 divisors (see below), whose sum is σ = 78041523200. Its totient is φ = 71334825120.

The previous prime is 74657689031. The next prime is 74657689091. The reversal of 74657689081 is 18098675647.

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 74657689081 - 2⁹ = 74657688569 is a prime.

It is a super-2 number, since 2×74657689081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74657689021) 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, 15240036 + ... + 15244933.

It is an arithmetic number, because the mean of its divisors is an integer number (9755190400).

Almost surely, 2^74657689081 is an apocalyptic number.

It is an amenable number.

74657689081 is a deficient number, since it is larger than the sum of its proper divisors (3383834119).

74657689081 is a wasteful number, since it uses less digits than its factorization.

74657689081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30485079.

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 74657689081 in words is "seventy-four billion, six hundred fifty-seven million, six hundred eighty-nine thousand, eighty-one".