77866232475616 has 96 divisors (see below), whose sum is σ = 169788245745888. Its totient is φ = 34924300830720.

The previous prime is 77866232475613. The next prime is 77866232475643. The reversal of 77866232475616 is 61657423266877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77866232475613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7524255 + ... + 14572126.

It is an arithmetic number, because the mean of its divisors is an integer number (1768627559853).

Almost surely, 2^{77866232475616} is an apocalyptic number.

It is an amenable number.

77866232475616 is an abundant number, since it is smaller than the sum of its proper divisors (91922013270272).

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

77866232475616 is a wasteful number, since it uses less digits than its factorization.

77866232475616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22096644 (or 22096636 counting only the distinct ones).

The product of its digits is 853493760, while the sum is 70.

The spelling of 77866232475616 in words is "seventy-seven trillion, eight hundred sixty-six billion, two hundred thirty-two million, four hundred seventy-five thousand, six hundred sixteen".