255515026651 has 8 divisors (see below), whose sum is σ = 259374798144. Its totient is φ = 251673857160.

The previous prime is 255515026639. The next prime is 255515026687. The reversal of 255515026651 is 156620515552.

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

It is a cyclic number.

It is not a de Polignac number, because 255515026651 - 2⁹ = 255515026139 is a prime.

It is a super-2 number, since 2×255515026651² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255515026598 and 255515026607.

It is not an unprimeable number, because it can be changed into a prime (255515056651) 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, 4622821 + ... + 4677766.

It is an arithmetic number, because the mean of its divisors is an integer number (32421849768).

Almost surely, 2^255515026651 is an apocalyptic number.

255515026651 is a deficient number, since it is larger than the sum of its proper divisors (3859771493).

255515026651 is an equidigital number, since it uses as much as digits as its factorization.

255515026651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9301001.

The product of its (nonzero) digits is 450000, while the sum is 43.

The spelling of 255515026651 in words is "two hundred fifty-five billion, five hundred fifteen million, twenty-six thousand, six hundred fifty-one".