80780537560 has 64 divisors (see below), whose sum is σ = 192496377600. Its totient is φ = 30423724416.

The previous prime is 80780537557. The next prime is 80780537567. The reversal of 80780537560 is 6573508708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80780537567) 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, 202164 + ... + 449923.

It is an arithmetic number, because the mean of its divisors is an integer number (3007755900).

Almost surely, 2^80780537560 is an apocalyptic number.

It is an amenable number.

80780537560 is an abundant number, since it is smaller than the sum of its proper divisors (111715840040).

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

80780537560 is a wasteful number, since it uses less digits than its factorization.

80780537560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652280 (or 652276 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 80780537560 in words is "eighty billion, seven hundred eighty million, five hundred thirty-seven thousand, five hundred sixty".