15442251131402 has 16 divisors (see below), whose sum is σ = 23186593516032. Its totient is φ = 7713387112560.

The previous prime is 15442251131327. The next prime is 15442251131423. The reversal of 15442251131402 is 20413115224451.

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, 74918828 + ... + 75124664.

It is an arithmetic number, because the mean of its divisors is an integer number (1449162094752).

Almost surely, 2^{15442251131402} is an apocalyptic number.

15442251131402 is a deficient number, since it is larger than the sum of its proper divisors (7744342384630).

15442251131402 is a wasteful number, since it uses less digits than its factorization.

15442251131402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243253.

The product of its (nonzero) digits is 38400, while the sum is 35.

Adding to 15442251131402 its reverse (20413115224451), we get a palindrome (35855366355853).

The spelling of 15442251131402 in words is "fifteen trillion, four hundred forty-two billion, two hundred fifty-one million, one hundred thirty-one thousand, four hundred two".