402811982644 has 96 divisors (see below), whose sum is σ = 744908982272. Its totient is φ = 190356480000.

The previous prime is 402811982633. The next prime is 402811982663. The reversal of 402811982644 is 446289118204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 670235944 + ... + 670236544.

Almost surely, 2^402811982644 is an apocalyptic number.

It is an amenable number.

402811982644 is a deficient number, since it is larger than the sum of its proper divisors (342096999628).

402811982644 is a wasteful number, since it uses less digits than its factorization.

402811982644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377 (or 1375 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 402811982644 in words is "four hundred two billion, eight hundred eleven million, nine hundred eighty-two thousand, six hundred forty-four".