80505780774 has 64 divisors (see below), whose sum is σ = 174246819840. Its totient is φ = 24720474240.

The previous prime is 80505780767. The next prime is 80505780779. The reversal of 80505780774 is 47708750508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80505780779) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1563459 + ... + 1614129.

It is an arithmetic number, because the mean of its divisors is an integer number (2722606560).

Almost surely, 2^80505780774 is an apocalyptic number.

80505780774 is an abundant number, since it is smaller than the sum of its proper divisors (93741039066).

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

80505780774 is a wasteful number, since it uses less digits than its factorization.

80505780774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51125.

The product of its (nonzero) digits is 2195200, while the sum is 51.

The spelling of 80505780774 in words is "eighty billion, five hundred five million, seven hundred eighty thousand, seven hundred seventy-four".