80577778530 has 32 divisors (see below), whose sum is σ = 193421297088. Its totient is φ = 21483560000.

The previous prime is 80577778483. The next prime is 80577778531. The reversal of 80577778530 is 3587777508.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (80577778531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68121 + ... + 407180.

It is an arithmetic number, because the mean of its divisors is an integer number (6044415534).

Almost surely, 2^80577778530 is an apocalyptic number.

80577778530 is an abundant number, since it is smaller than the sum of its proper divisors (112843518558).

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

80577778530 is a wasteful number, since it uses less digits than its factorization.

80577778530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480962.

The product of its (nonzero) digits is 11524800, while the sum is 57.

The spelling of 80577778530 in words is "eighty billion, five hundred seventy-seven million, seven hundred seventy-eight thousand, five hundred thirty".