78596770155 has 16 divisors (see below), whose sum is σ = 125945097504. Its totient is φ = 41854855680.

The previous prime is 78596770129. The next prime is 78596770159. The reversal of 78596770155 is 55107769587.

It is a happy number.

It is not a de Polignac number, because 78596770155 - 2⁸ = 78596769899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78596770159) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 3953614 + ... + 3973443.

It is an arithmetic number, because the mean of its divisors is an integer number (7871568594).

Almost surely, 2^78596770155 is an apocalyptic number.

78596770155 is a deficient number, since it is larger than the sum of its proper divisors (47348327349).

78596770155 is a wasteful number, since it uses less digits than its factorization.

78596770155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7927726.

The product of its (nonzero) digits is 18522000, while the sum is 60.

The spelling of 78596770155 in words is "seventy-eight billion, five hundred ninety-six million, seven hundred seventy thousand, one hundred fifty-five".