15542080086877 has 2 divisors, whose sum is σ = 15542080086878. Its totient is φ = 15542080086876.

The previous prime is 15542080086857. The next prime is 15542080086899. The reversal of 15542080086877 is 77868008024551.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10873070984356 + 4669009102521 = 3297434^2 + 2160789^2 .

It is a cyclic number.

It is not a de Polignac number, because 15542080086877 - 2¹⁹ = 15542079562589 is a prime.

It is a super-2 number, since 2×15542080086877² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15542080086857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7771040043438 + 7771040043439.

It is an arithmetic number, because the mean of its divisors is an integer number (7771040043439).

Almost surely, 2^{15542080086877} is an apocalyptic number.

It is an amenable number.

15542080086877 is a deficient number, since it is larger than the sum of its proper divisors (1).

15542080086877 is an equidigital number, since it uses as much as digits as its factorization.

15542080086877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30105600, while the sum is 61.

The spelling of 15542080086877 in words is "fifteen trillion, five hundred forty-two billion, eighty million, eighty-six thousand, eight hundred seventy-seven".