771315589940 has 24 divisors (see below), whose sum is σ = 1851157416192. Its totient is φ = 264451059360.

The previous prime is 771315589939. The next prime is 771315589951. The reversal of 771315589940 is 49985513177.

It is a self number, because there is not a number n which added to its sum of digits gives 771315589940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2754698396 + ... + 2754698675.

It is an arithmetic number, because the mean of its divisors is an integer number (77131559008).

Almost surely, 2^771315589940 is an apocalyptic number.

771315589940 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

771315589940 is an abundant number, since it is smaller than the sum of its proper divisors (1079841826252).

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

771315589940 is a wasteful number, since it uses less digits than its factorization.

771315589940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5509397087 (or 5509397085 counting only the distinct ones).

The product of its (nonzero) digits is 9525600, while the sum is 59.

The spelling of 771315589940 in words is "seven hundred seventy-one billion, three hundred fifteen million, five hundred eighty-nine thousand, nine hundred forty".