123521525342343 has 24 divisors (see below), whose sum is σ = 186177942512640. Its totient is φ = 78767107924560.

The previous prime is 123521525342291. The next prime is 123521525342351. The reversal of 123521525342343 is 343243525125321.

123521525342343 is a `hidden beast` number, since 1 + 2 + 3 + 5 + 2 + 1 + 52 + 534 + 23 + 43 = 666.

It is not a de Polignac number, because 123521525342343 - 2⁹ = 123521525341831 is a prime.

It is a super-3 number, since 3×123521525342343³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123521525342363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87180958 + ... + 88586468.

It is an arithmetic number, because the mean of its divisors is an integer number (7757414271360).

Almost surely, 2^{123521525342343} is an apocalyptic number.

123521525342343 is a deficient number, since it is larger than the sum of its proper divisors (62656417170297).

123521525342343 is a wasteful number, since it uses less digits than its factorization.

123521525342343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830099 (or 1830096 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 45.

The spelling of 123521525342343 in words is "one hundred twenty-three trillion, five hundred twenty-one billion, five hundred twenty-five million, three hundred forty-two thousand, three hundred forty-three".