77782494534 has 64 divisors (see below), whose sum is σ = 161215159296. Its totient is φ = 24999404544.

The previous prime is 77782494529. The next prime is 77782494541. The reversal of 77782494534 is 43549428777.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13277334 + ... + 13283190.

It is an arithmetic number, because the mean of its divisors is an integer number (2518986864).

Almost surely, 2^77782494534 is an apocalyptic number.

77782494534 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

77782494534 is an abundant number, since it is smaller than the sum of its proper divisors (83432664762).

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

77782494534 is a wasteful number, since it uses less digits than its factorization.

77782494534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6429.

The product of its digits is 47416320, while the sum is 60.

The spelling of 77782494534 in words is "seventy-seven billion, seven hundred eighty-two million, four hundred ninety-four thousand, five hundred thirty-four".