77913355155 has 16 divisors (see below), whose sum is σ = 126369060000. Its totient is φ = 40984558848.

The previous prime is 77913355153. The next prime is 77913355159. The reversal of 77913355155 is 55155331977.

It is not a de Polignac number, because 77913355155 - 2¹ = 77913355153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77913355098 and 77913355107.

It is not an unprimeable number, because it can be changed into a prime (77913355153) 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, 35575780 + ... + 35577969.

It is an arithmetic number, because the mean of its divisors is an integer number (7898066250).

Almost surely, 2^77913355155 is an apocalyptic number.

77913355155 is a deficient number, since it is larger than the sum of its proper divisors (48455704845).

77913355155 is a wasteful number, since it uses less digits than its factorization.

77913355155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71153830.

The product of its digits is 2480625, while the sum is 51.

The spelling of 77913355155 in words is "seventy-seven billion, nine hundred thirteen million, three hundred fifty-five thousand, one hundred fifty-five".