77970758072 has 8 divisors (see below), whose sum is σ = 146195171400. Its totient is φ = 38985379032.

The previous prime is 77970758051. The next prime is 77970758101. The reversal of 77970758072 is 27085707977.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×77970758072² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4873172372 + ... + 4873172387.

It is an arithmetic number, because the mean of its divisors is an integer number (18274396425).

Almost surely, 2^77970758072 is an apocalyptic number.

It is an amenable number.

77970758072 is a deficient number, since it is larger than the sum of its proper divisors (68224413328).

77970758072 is a wasteful number, since it uses less digits than its factorization.

77970758072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9746344765 (or 9746344761 counting only the distinct ones).

The product of its (nonzero) digits is 12101040, while the sum is 59.

The spelling of 77970758072 in words is "seventy-seven billion, nine hundred seventy million, seven hundred fifty-eight thousand, seventy-two".