123015552511 has 2 divisors, whose sum is σ = 123015552512. Its totient is φ = 123015552510.

The previous prime is 123015552479. The next prime is 123015552521. The reversal of 123015552511 is 115255510321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123015552511 - 2⁵ = 123015552479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123015552521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61507776255 + 61507776256.

It is an arithmetic number, because the mean of its divisors is an integer number (61507776256).

Almost surely, 2^123015552511 is an apocalyptic number.

123015552511 is a deficient number, since it is larger than the sum of its proper divisors (1).

123015552511 is an equidigital number, since it uses as much as digits as its factorization.

123015552511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7500, while the sum is 31.

The spelling of 123015552511 in words is "one hundred twenty-three billion, fifteen million, five hundred fifty-two thousand, five hundred eleven".