122540345523 has 48 divisors (see below), whose sum is σ = 191267088480. Its totient is φ = 75312387072.

The previous prime is 122540345519. The next prime is 122540345561. The reversal of 122540345523 is 325543045221.

122540345523 is a `hidden beast` number, since 1 + 22 + 54 + 0 + 34 + 552 + 3 = 666.

It is not a de Polignac number, because 122540345523 - 2² = 122540345519 is a prime.

It is a super-2 number, since 2×122540345523² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122540345923) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5007265 + ... + 5031677.

It is an arithmetic number, because the mean of its divisors is an integer number (3984731010).

Almost surely, 2^122540345523 is an apocalyptic number.

122540345523 is a deficient number, since it is larger than the sum of its proper divisors (68726742957).

122540345523 is a wasteful number, since it uses less digits than its factorization.

122540345523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25108 (or 25105 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 122540345523 in words is "one hundred twenty-two billion, five hundred forty million, three hundred forty-five thousand, five hundred twenty-three".