77147417776 has 160 divisors (see below), whose sum is σ = 180308459520. Its totient is φ = 31506278400.

The previous prime is 77147417761. The next prime is 77147417797. The reversal of 77147417776 is 67771474177.

It is a self number, because there is not a number n which added to its sum of digits gives 77147417776.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60317905 + ... + 60319183.

It is an arithmetic number, because the mean of its divisors is an integer number (1126927872).

Almost surely, 2^77147417776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77147417776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90154229760).

77147417776 is an abundant number, since it is smaller than the sum of its proper divisors (103161041744).

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

77147417776 is a wasteful number, since it uses less digits than its factorization.

77147417776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995 (or 1989 counting only the distinct ones).

The product of its digits is 11294304, while the sum is 58.

The spelling of 77147417776 in words is "seventy-seven billion, one hundred forty-seven million, four hundred seventeen thousand, seven hundred seventy-six".