12156401498 has 16 divisors (see below), whose sum is σ = 18720494496. Its totient is φ = 5917987920.

The previous prime is 12156401489. The next prime is 12156401539. The reversal of 12156401498 is 89410465121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423836 + ... + 451607.

It is an arithmetic number, because the mean of its divisors is an integer number (1170030906).

Almost surely, 2^12156401498 is an apocalyptic number.

12156401498 is a deficient number, since it is larger than the sum of its proper divisors (6564092998).

12156401498 is a wasteful number, since it uses less digits than its factorization.

12156401498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875629.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 12156401498 in words is "twelve billion, one hundred fifty-six million, four hundred one thousand, four hundred ninety-eight".