77911323876 has 81 divisors (see below), whose sum is σ = 204625595811. Its totient is φ = 25955368488.

The previous prime is 77911323869. The next prime is 77911323883. The reversal of 77911323876 is 67832311977.

The square root of 77911323876 is 279126.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (77911323869) and next prime (77911323883).

It is a tau number, because it is divible by the number of its divisors (81).

It is a super-2 number, since 2×77911323876² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 45217551 + ... + 45219273.

Almost surely, 2^77911323876 is an apocalyptic number.

77911323876 is the 279126-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77911323876

77911323876 is an abundant number, since it is smaller than the sum of its proper divisors (126714271935).

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

77911323876 is an frugal number, since it uses more digits than its factorization.

77911323876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3474 (or 1728 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The spelling of 77911323876 in words is "seventy-seven billion, nine hundred eleven million, three hundred twenty-three thousand, eight hundred seventy-six".