77970287504 has 10 divisors (see below), whose sum is σ = 151067432070. Its totient is φ = 38985143744.

The previous prime is 77970287497. The next prime is 77970287533. The reversal of 77970287504 is 40578207977.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 56811675904 + 21158611600 = 238352^2 + 145460^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77970287504.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2436571469 + ... + 2436571500.

It is an arithmetic number, because the mean of its divisors is an integer number (15106743207).

Almost surely, 2^77970287504 is an apocalyptic number.

It is an amenable number.

77970287504 is a deficient number, since it is larger than the sum of its proper divisors (73097144566).

77970287504 is a wasteful number, since it uses less digits than its factorization.

77970287504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4873142977 (or 4873142971 counting only the distinct ones).

The product of its (nonzero) digits is 6914880, while the sum is 56.

The spelling of 77970287504 in words is "seventy-seven billion, nine hundred seventy million, two hundred eighty-seven thousand, five hundred four".