312666154421 has 16 divisors (see below), whose sum is σ = 327796547328. Its totient is φ = 297666230400.

The previous prime is 312666154397. The next prime is 312666154453. The reversal of 312666154421 is 124451666213.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312666154421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312666154481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5705411 + ... + 5759951.

It is an arithmetic number, because the mean of its divisors is an integer number (20487284208).

Almost surely, 2^312666154421 is an apocalyptic number.

It is an amenable number.

312666154421 is a deficient number, since it is larger than the sum of its proper divisors (15130392907).

312666154421 is a wasteful number, since it uses less digits than its factorization.

312666154421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55732.

The product of its digits is 207360, while the sum is 41.

The spelling of 312666154421 in words is "three hundred twelve billion, six hundred sixty-six million, one hundred fifty-four thousand, four hundred twenty-one".