6401212144156 has 18 divisors (see below), whose sum is σ = 11822737390800. Its totient is φ = 3032153120232.

The previous prime is 6401212144097. The next prime is 6401212144177. The reversal of 6401212144156 is 6514412121046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2216484756 + ... + 2216487643.

Almost surely, 2^{6401212144156} is an apocalyptic number.

It is an amenable number.

6401212144156 is a deficient number, since it is larger than the sum of its proper divisors (5421525246644).

6401212144156 is a wasteful number, since it uses less digits than its factorization.

6401212144156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4432972441 (or 4432972420 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 6401212144156 in words is "six trillion, four hundred one billion, two hundred twelve million, one hundred forty-four thousand, one hundred fifty-six".