13078078502 has 4 divisors (see below), whose sum is σ = 19617117756. Its totient is φ = 6539039250.

The previous prime is 13078078459. The next prime is 13078078589. The reversal of 13078078502 is 20587087031.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×13078078502² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13078078502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3269519624 + ... + 3269519627.

It is an arithmetic number, because the mean of its divisors is an integer number (4904279439).

Almost surely, 2^13078078502 is an apocalyptic number.

13078078502 is a deficient number, since it is larger than the sum of its proper divisors (6539039254).

13078078502 is an equidigital number, since it uses as much as digits as its factorization.

13078078502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6539039253.

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 13078078502 in words is "thirteen billion, seventy-eight million, seventy-eight thousand, five hundred two".