77717220474 has 16 divisors (see below), whose sum is σ = 155438968608. Its totient is φ = 25904985552.

The previous prime is 77717220467. The next prime is 77717220481. The reversal of 77717220474 is 47402271777.

It is an interprime number because it is at equal distance from previous prime (77717220467) and next prime (77717220481).

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 7 ways as a sum of consecutive naturals, for example, 59629 + ... + 398735.

It is an arithmetic number, because the mean of its divisors is an integer number (9714935538).

Almost surely, 2^77717220474 is an apocalyptic number.

77717220474 is an abundant number, since it is smaller than the sum of its proper divisors (77721748134).

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

77717220474 is a wasteful number, since it uses less digits than its factorization.

77717220474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377309.

The product of its (nonzero) digits is 1075648, while the sum is 48.

The spelling of 77717220474 in words is "seventy-seven billion, seven hundred seventeen million, two hundred twenty thousand, four hundred seventy-four".