13507780778780 has 96 divisors (see below), whose sum is σ = 29553533399040. Its totient is φ = 5183105241600.

The previous prime is 13507780778773. The next prime is 13507780778803. The reversal of 13507780778780 is 8787708770531.

It is a self number, because there is not a number n which added to its sum of digits gives 13507780778780.

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, 6853805 + ... + 8601755.

It is an arithmetic number, because the mean of its divisors is an integer number (307849306240).

Almost surely, 2^{13507780778780} is an apocalyptic number.

13507780778780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13507780778780 is an abundant number, since it is smaller than the sum of its proper divisors (16045752620260).

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

13507780778780 is a wasteful number, since it uses less digits than its factorization.

13507780778780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748179 (or 1748177 counting only the distinct ones).

The product of its (nonzero) digits is 129077760, while the sum is 68.

The spelling of 13507780778780 in words is "thirteen trillion, five hundred seven billion, seven hundred eighty million, seven hundred seventy-eight thousand, seven hundred eighty".