55005000000051 has 16 divisors (see below), whose sum is σ = 75342147389600. Its totient is φ = 35669452232448.

The previous prime is 55005000000031. The next prime is 55005000000053. The reversal of 55005000000051 is 15000000050055.

It is not a de Polignac number, because 55005000000051 - 2¹³ = 55004999991859 is a prime.

It is a super-2 number, since 2×55005000000051² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55004999999964 and 55005000000027.

It is not an unprimeable number, because it can be changed into a prime (55005000000053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65320636 + ... + 66157353.

It is an arithmetic number, because the mean of its divisors is an integer number (4708884211850).

Almost surely, 2^{55005000000051} is an apocalyptic number.

55005000000051 is a deficient number, since it is larger than the sum of its proper divisors (20337147389549).

55005000000051 is a wasteful number, since it uses less digits than its factorization.

55005000000051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131481798.

The product of its (nonzero) digits is 625, while the sum is 21.

The spelling of 55005000000051 in words is "fifty-five trillion, five billion, fifty-one", and thus it is an aban number and an uban number.