15556100101055 has 4 divisors (see below), whose sum is σ = 18667320121272. Its totient is φ = 12444880080840.

The previous prime is 15556100101021. The next prime is 15556100101081. The reversal of 15556100101055 is 55010100165551.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 15556100101055 - 2¹⁶ = 15556100035519 is a prime.

It is a super-2 number, since 2×15556100101055² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1555610010101 + ... + 1555610010110.

It is an arithmetic number, because the mean of its divisors is an integer number (4666830030318).

Almost surely, 2^{15556100101055} is an apocalyptic number.

15556100101055 is a deficient number, since it is larger than the sum of its proper divisors (3111220020217).

15556100101055 is an equidigital number, since it uses as much as digits as its factorization.

15556100101055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3111220020216.

The product of its (nonzero) digits is 18750, while the sum is 35.

The spelling of 15556100101055 in words is "fifteen trillion, five hundred fifty-six billion, one hundred million, one hundred one thousand, fifty-five".