77702893464 has 128 divisors (see below), whose sum is σ = 227231424000. Its totient is φ = 22132978560.

The previous prime is 77702893453. The next prime is 77702893469. The reversal of 77702893464 is 46439820777.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77702893469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2710534 + ... + 2739050.

It is an arithmetic number, because the mean of its divisors is an integer number (1775245500).

Almost surely, 2^77702893464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77702893464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113615712000).

77702893464 is an abundant number, since it is smaller than the sum of its proper divisors (149528530536).

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

77702893464 is a wasteful number, since it uses less digits than its factorization.

77702893464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28878 (or 28860 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 57.

The spelling of 77702893464 in words is "seventy-seven billion, seven hundred two million, eight hundred ninety-three thousand, four hundred sixty-four".