123455535501 has 8 divisors (see below), whose sum is σ = 164637611200. Its totient is φ = 82288575072.

The previous prime is 123455535479. The next prime is 123455535527. The reversal of 123455535501 is 105535554321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123455535501 - 2²² = 123451341197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123455535501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123455535101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3759745 + ... + 3792438.

It is an arithmetic number, because the mean of its divisors is an integer number (20579701400).

Almost surely, 2^123455535501 is an apocalyptic number.

It is an amenable number.

123455535501 is a deficient number, since it is larger than the sum of its proper divisors (41182075699).

123455535501 is an equidigital number, since it uses as much as digits as its factorization.

123455535501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7557635.

The product of its (nonzero) digits is 225000, while the sum is 39.

The spelling of 123455535501 in words is "one hundred twenty-three billion, four hundred fifty-five million, five hundred thirty-five thousand, five hundred one".