1631406210642 has 32 divisors (see below), whose sum is σ = 3904219992960. Its totient is φ = 501971141520.

The previous prime is 1631406210593. The next prime is 1631406210671. The reversal of 1631406210642 is 2460126041361.

1631406210642 is a `hidden beast` number, since 1 + 6 + 3 + 1 + 4 + 0 + 6 + 2 + 1 + 0 + 642 = 666.

It is a super-2 number, since 2×1631406210642² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1631406210597 and 1631406210606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1161969534 + ... + 1161970937.

It is an arithmetic number, because the mean of its divisors is an integer number (122006874780).

Almost surely, 2^{1631406210642} is an apocalyptic number.

1631406210642 is an abundant number, since it is smaller than the sum of its proper divisors (2272813782318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1631406210642 is a wasteful number, since it uses less digits than its factorization.

1631406210642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323940495 (or 2323940489 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 1631406210642 in words is "one trillion, six hundred thirty-one billion, four hundred six million, two hundred ten thousand, six hundred forty-two".