1656431147632 has 20 divisors (see below), whose sum is σ = 3230874516600. Its totient is φ = 822657078848.

The previous prime is 1656431147561. The next prime is 1656431147633. The reversal of 1656431147632 is 2367411346561.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656431147633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347403478 + ... + 347408245.

It is an arithmetic number, because the mean of its divisors is an integer number (161543725830).

Almost surely, 2^{1656431147632} is an apocalyptic number.

It is an amenable number.

1656431147632 is a deficient number, since it is larger than the sum of its proper divisors (1574443368968).

1656431147632 is a wasteful number, since it uses less digits than its factorization.

1656431147632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694811880 (or 694811874 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 49.

The spelling of 1656431147632 in words is "one trillion, six hundred fifty-six billion, four hundred thirty-one million, one hundred forty-seven thousand, six hundred thirty-two".