123452154505 has 16 divisors (see below), whose sum is σ = 153596969280. Its totient is φ = 95140846528.

The previous prime is 123452154479. The next prime is 123452154547. The reversal of 123452154505 is 505451254321.

It is a cyclic number.

It is not a de Polignac number, because 123452154505 - 2²⁵ = 123418600073 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 896707 + ... + 1025176.

It is an arithmetic number, because the mean of its divisors is an integer number (9599810580).

Almost surely, 2^123452154505 is an apocalyptic number.

It is an amenable number.

123452154505 is a deficient number, since it is larger than the sum of its proper divisors (30144814775).

123452154505 is a wasteful number, since it uses less digits than its factorization.

123452154505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922360.

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 123452154505 in words is "one hundred twenty-three billion, four hundred fifty-two million, one hundred fifty-four thousand, five hundred five".