2115654565051 has 2 divisors, whose sum is σ = 2115654565052. Its totient is φ = 2115654565050.

The previous prime is 2115654564983. The next prime is 2115654565133. The reversal of 2115654565051 is 1505654565112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2115654565051 - 2⁹ = 2115654564539 is a prime.

It is a super-2 number, since 2×2115654565051² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2115654564992 and 2115654565010.

It is not a weakly prime, because it can be changed into another prime (2115654565951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057827282525 + 1057827282526.

It is an arithmetic number, because the mean of its divisors is an integer number (1057827282526).

Almost surely, 2^{2115654565051} is an apocalyptic number.

2115654565051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115654565051 is an equidigital number, since it uses as much as digits as its factorization.

2115654565051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900000, while the sum is 46.

The spelling of 2115654565051 in words is "two trillion, one hundred fifteen billion, six hundred fifty-four million, five hundred sixty-five thousand, fifty-one".