15401616939394 has 16 divisors (see below), whose sum is σ = 26403777848448. Its totient is φ = 6600441485952.

The previous prime is 15401616939383. The next prime is 15401616939427. The reversal of 15401616939394 is 49393961610451.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20576527 + ... + 21311890.

It is an arithmetic number, because the mean of its divisors is an integer number (1650236115528).

Almost surely, 2^{15401616939394} is an apocalyptic number.

15401616939394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

15401616939394 is a deficient number, since it is larger than the sum of its proper divisors (11002160909054).

15401616939394 is a wasteful number, since it uses less digits than its factorization.

15401616939394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41914689.

The product of its (nonzero) digits is 18895680, while the sum is 61.

The spelling of 15401616939394 in words is "fifteen trillion, four hundred one billion, six hundred sixteen million, nine hundred thirty-nine thousand, three hundred ninety-four".