13090623698 has 4 divisors (see below), whose sum is σ = 19635935550. Its totient is φ = 6545311848.

The previous prime is 13090623691. The next prime is 13090623701. The reversal of 13090623698 is 89632609031.

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

It can be written as a sum of positive squares in only one way, i.e., 7744528009 + 5346095689 = 88003^2 + 73117^2 .

It is not an unprimeable number, because it can be changed into a prime (13090623691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3272655923 + ... + 3272655926.

Almost surely, 2^13090623698 is an apocalyptic number.

13090623698 is a deficient number, since it is larger than the sum of its proper divisors (6545311852).

13090623698 is an equidigital number, since it uses as much as digits as its factorization.

13090623698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6545311851.

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 13090623698 in words is "thirteen billion, ninety million, six hundred twenty-three thousand, six hundred ninety-eight".