77514621700 has 36 divisors (see below), whose sum is σ = 168239427300. Its totient is φ = 30999821440.

The previous prime is 77514621671. The next prime is 77514621713. The reversal of 77514621700 is 712641577.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1082278404 + 76432343296 = 32898^2 + 276464^2 .

It is a super-2 number, since 2×77514621700² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 460626 + ... + 605974.

It is an arithmetic number, because the mean of its divisors is an integer number (4673317425).

Almost surely, 2^77514621700 is an apocalyptic number.

It is an amenable number.

77514621700 is an abundant number, since it is smaller than the sum of its proper divisors (90724805600).

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

77514621700 is a wasteful number, since it uses less digits than its factorization.

77514621700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150696 (or 150689 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 40.

The spelling of 77514621700 in words is "seventy-seven billion, five hundred fourteen million, six hundred twenty-one thousand, seven hundred".