55055156561515 has 64 divisors (see below), whose sum is σ = 75308159963520. Its totient is φ = 38270292480000.

The previous prime is 55055156561491. The next prime is 55055156561557. The reversal of 55055156561515 is 51516565155055.

It is not a de Polignac number, because 55055156561515 - 2¹¹ = 55055156559467 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1102025917 + ... + 1102075873.

It is an arithmetic number, because the mean of its divisors is an integer number (1176689999430).

Almost surely, 2^{55055156561515} is an apocalyptic number.

55055156561515 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55055156561515 is a deficient number, since it is larger than the sum of its proper divisors (20253003402005).

55055156561515 is a wasteful number, since it uses less digits than its factorization.

55055156561515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56944.

The product of its (nonzero) digits is 14062500, while the sum is 55.

The spelling of 55055156561515 in words is "fifty-five trillion, fifty-five billion, one hundred fifty-six million, five hundred sixty-one thousand, five hundred fifteen".