123454115422487 has 2 divisors, whose sum is σ = 123454115422488. Its totient is φ = 123454115422486.

The previous prime is 123454115422471. The next prime is 123454115422523. The reversal of 123454115422487 is 784224511454321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123454115422487 - 2⁴ = 123454115422471 is a prime.

It is a super-2 number, since 2×123454115422487² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123454111422487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61727057711243 + 61727057711244.

It is an arithmetic number, because the mean of its divisors is an integer number (61727057711244).

Almost surely, 2^{123454115422487} is an apocalyptic number.

123454115422487 is a deficient number, since it is larger than the sum of its proper divisors (1).

123454115422487 is an equidigital number, since it uses as much as digits as its factorization.

123454115422487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8601600, while the sum is 53.

The spelling of 123454115422487 in words is "one hundred twenty-three trillion, four hundred fifty-four billion, one hundred fifteen million, four hundred twenty-two thousand, four hundred eighty-seven".