74771639092 has 6 divisors (see below), whose sum is σ = 130850368418. Its totient is φ = 37385819544.

The previous prime is 74771639083. The next prime is 74771639093. The reversal of 74771639092 is 29093617747.

It can be written as a sum of positive squares in only one way, i.e., 74771621136 + 17956 = 273444^2 + 134^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74771639093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9346454883 + ... + 9346454890.

Almost surely, 2^74771639092 is an apocalyptic number.

It is an amenable number.

74771639092 is a deficient number, since it is larger than the sum of its proper divisors (56078729326).

74771639092 is a wasteful number, since it uses less digits than its factorization.

74771639092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18692909777 (or 18692909775 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 55.

The spelling of 74771639092 in words is "seventy-four billion, seven hundred seventy-one million, six hundred thirty-nine thousand, ninety-two".