55173072651 has 16 divisors (see below), whose sum is σ = 78159600000. Its totient is φ = 34520482368.

The previous prime is 55173072641. The next prime is 55173072653. The reversal of 55173072651 is 15627037155.

It is not a de Polignac number, because 55173072651 - 2⁹ = 55173072139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55173072653) 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, 4517026 + ... + 4529223.

It is an arithmetic number, because the mean of its divisors is an integer number (4884975000).

Almost surely, 2^55173072651 is an apocalyptic number.

55173072651 is a deficient number, since it is larger than the sum of its proper divisors (22986527349).

55173072651 is a wasteful number, since it uses less digits than its factorization.

55173072651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9046378.

The product of its (nonzero) digits is 220500, while the sum is 42.

The spelling of 55173072651 in words is "fifty-five billion, one hundred seventy-three million, seventy-two thousand, six hundred fifty-one".