12156907454 has 8 divisors (see below), whose sum is σ = 18659439480. Its totient is φ = 5937094296.

The previous prime is 12156907421. The next prime is 12156907493. The reversal of 12156907454 is 45470965121.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70679609 + ... + 70679780.

It is an arithmetic number, because the mean of its divisors is an integer number (2332429935).

Almost surely, 2^12156907454 is an apocalyptic number.

12156907454 is a deficient number, since it is larger than the sum of its proper divisors (6502532026).

12156907454 is a wasteful number, since it uses less digits than its factorization.

12156907454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141359434.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 12156907454 in words is "twelve billion, one hundred fifty-six million, nine hundred seven thousand, four hundred fifty-four".