15942376454401 has 4 divisors (see below), whose sum is σ = 16067906977792. Its totient is φ = 15816845931012.

The previous prime is 15942376454377. The next prime is 15942376454413. The reversal of 15942376454401 is 10445467324951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15942376454401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15942376454491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62765261505 + ... + 62765261758.

It is an arithmetic number, because the mean of its divisors is an integer number (4016976744448).

Almost surely, 2^{15942376454401} is an apocalyptic number.

It is an amenable number.

15942376454401 is a deficient number, since it is larger than the sum of its proper divisors (125530523391).

15942376454401 is a wasteful number, since it uses less digits than its factorization.

15942376454401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125530523390.

The product of its (nonzero) digits is 14515200, while the sum is 55.

The spelling of 15942376454401 in words is "fifteen trillion, nine hundred forty-two billion, three hundred seventy-six million, four hundred fifty-four thousand, four hundred one".