77027172140 has 12 divisors (see below), whose sum is σ = 161757061536. Its totient is φ = 30810868848.

The previous prime is 77027172121. The next prime is 77027172149. The reversal of 77027172140 is 4127172077.

It is a junction number, because it is equal to n+sod(n) for n = 77027172094 and 77027172103.

It is not an unprimeable number, because it can be changed into a prime (77027172149) 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, 1925679284 + ... + 1925679323.

It is an arithmetic number, because the mean of its divisors is an integer number (13479755128).

Almost surely, 2^77027172140 is an apocalyptic number.

It is an amenable number.

77027172140 is an abundant number, since it is smaller than the sum of its proper divisors (84729889396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77027172140 is a wasteful number, since it uses less digits than its factorization.

77027172140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3851358616 (or 3851358614 counting only the distinct ones).

The product of its (nonzero) digits is 38416, while the sum is 38.

The spelling of 77027172140 in words is "seventy-seven billion, twenty-seven million, one hundred seventy-two thousand, one hundred forty".