13406780774 has 4 divisors (see below), whose sum is σ = 20110171164. Its totient is φ = 6703390386.

The previous prime is 13406780759. The next prime is 13406780813. The reversal of 13406780774 is 47708760431.

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

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, 3351695192 + ... + 3351695195.

It is an arithmetic number, because the mean of its divisors is an integer number (5027542791).

Almost surely, 2^13406780774 is an apocalyptic number.

13406780774 is a deficient number, since it is larger than the sum of its proper divisors (6703390390).

13406780774 is an equidigital number, since it uses as much as digits as its factorization.

13406780774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6703390389.

The product of its (nonzero) digits is 790272, while the sum is 47.

The spelling of 13406780774 in words is "thirteen billion, four hundred six million, seven hundred eighty thousand, seven hundred seventy-four".