78760661155 has 24 divisors (see below), whose sum is σ = 104343792336. Its totient is φ = 57028044480.

The previous prime is 78760661149. The next prime is 78760661167. The reversal of 78760661155 is 55116606787.

It is not a de Polignac number, because 78760661155 - 2¹³ = 78760652963 is a prime.

It is a Duffinian number.

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 23 ways as a sum of consecutive naturals, for example, 149412 + ... + 424081.

It is an arithmetic number, because the mean of its divisors is an integer number (4347658014).

Almost surely, 2^78760661155 is an apocalyptic number.

78760661155 is a deficient number, since it is larger than the sum of its proper divisors (25583131181).

78760661155 is a wasteful number, since it uses less digits than its factorization.

78760661155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573747 (or 573736 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 52.

The spelling of 78760661155 in words is "seventy-eight billion, seven hundred sixty million, six hundred sixty-one thousand, one hundred fifty-five".