15942376454377 has 2 divisors, whose sum is σ = 15942376454378. Its totient is φ = 15942376454376.

The previous prime is 15942376454353. The next prime is 15942376454413. The reversal of 15942376454377 is 77345467324951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10938471416896 + 5003905037481 = 3307336^2 + 2236941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15942376454377 is a prime.

It is not a weakly prime, because it can be changed into another prime (15942376452377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7971188227188 + 7971188227189.

It is an arithmetic number, because the mean of its divisors is an integer number (7971188227189).

Almost surely, 2^{15942376454377} is an apocalyptic number.

It is an amenable number.

15942376454377 is a deficient number, since it is larger than the sum of its proper divisors (1).

15942376454377 is an equidigital number, since it uses as much as digits as its factorization.

15942376454377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 533433600, while the sum is 67.

The spelling of 15942376454377 in words is "fifteen trillion, nine hundred forty-two billion, three hundred seventy-six million, four hundred fifty-four thousand, three hundred seventy-seven".