55016115621155 has 32 divisors (see below), whose sum is σ = 73026548650944. Its totient is φ = 39525332092416.

The previous prime is 55016115621139. The next prime is 55016115621163. The reversal of 55016115621155 is 55112651161055.

It is a cyclic number.

It is not a de Polignac number, because 55016115621155 - 2⁴ = 55016115621139 is a prime.

It is a super-2 number, since 2×55016115621155² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23241092 + ... + 25498638.

It is an arithmetic number, because the mean of its divisors is an integer number (2282079645342).

Almost surely, 2^{55016115621155} is an apocalyptic number.

55016115621155 is a deficient number, since it is larger than the sum of its proper divisors (18010433029789).

55016115621155 is a wasteful number, since it uses less digits than its factorization.

55016115621155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267735.

The product of its (nonzero) digits is 225000, while the sum is 44.

The spelling of 55016115621155 in words is "fifty-five trillion, sixteen billion, one hundred fifteen million, six hundred twenty-one thousand, one hundred fifty-five".