55821626365251 has 8 divisors (see below), whose sum is σ = 74520609306304. Its totient is φ = 37168530500520.

The previous prime is 55821626365237. The next prime is 55821626365273. The reversal of 55821626365251 is 15256362612855.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55821626365251 - 2⁷ = 55821626365123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55821626365191 and 55821626365200.

It is not an unprimeable number, because it can be changed into a prime (55821626365231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11471766241 + ... + 11471771106.

It is an arithmetic number, because the mean of its divisors is an integer number (9315076163288).

Almost surely, 2^{55821626365251} is an apocalyptic number.

55821626365251 is a deficient number, since it is larger than the sum of its proper divisors (18698982941053).

55821626365251 is a wasteful number, since it uses less digits than its factorization.

55821626365251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22943538161.

The product of its digits is 25920000, while the sum is 57.

The spelling of 55821626365251 in words is "fifty-five trillion, eight hundred twenty-one billion, six hundred twenty-six million, three hundred sixty-five thousand, two hundred fifty-one".