77366951712 has 60 divisors (see below), whose sum is σ = 227534063526. Its totient is φ = 25788983040.

The previous prime is 77366951693. The next prime is 77366951719. The reversal of 77366951712 is 21715966377.

It can be written as a sum of positive squares in only one way, i.e., 46516136976 + 30850814736 = 215676^2 + 175644^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (77366951719) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14921589 + ... + 14926772.

Almost surely, 2^77366951712 is an apocalyptic number.

77366951712 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

77366951712 is an abundant number, since it is smaller than the sum of its proper divisors (150167111814).

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

77366951712 is a wasteful number, since it uses less digits than its factorization.

77366951712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29848383 (or 29848366 counting only the distinct ones).

The product of its digits is 3333960, while the sum is 54.

The spelling of 77366951712 in words is "seventy-seven billion, three hundred sixty-six million, nine hundred fifty-one thousand, seven hundred twelve".