123132511523519 has 2 divisors, whose sum is σ = 123132511523520. Its totient is φ = 123132511523518.

The previous prime is 123132511523473. The next prime is 123132511523551. The reversal of 123132511523519 is 915325115231321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123132511523519 is a prime.

It is a super-2 number, since 2×123132511523519² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123132511523519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123132511523569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61566255761759 + 61566255761760.

It is an arithmetic number, because the mean of its divisors is an integer number (61566255761760).

Almost surely, 2^{123132511523519} is an apocalyptic number.

123132511523519 is a deficient number, since it is larger than the sum of its proper divisors (1).

123132511523519 is an equidigital number, since it uses as much as digits as its factorization.

123132511523519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243000, while the sum is 44.

The spelling of 123132511523519 in words is "one hundred twenty-three trillion, one hundred thirty-two billion, five hundred eleven million, five hundred twenty-three thousand, five hundred nineteen".