31642664645463 has 16 divisors (see below), whose sum is σ = 44672129811936. Its totient is φ = 19854161991680.

The previous prime is 31642664645443. The next prime is 31642664645477. The reversal of 31642664645463 is 36454646624613.

It is a cyclic number.

It is not a de Polignac number, because 31642664645463 - 2⁹ = 31642664644951 is a prime.

It is a super-4 number, since 4×31642664645463⁴ (a number of 55 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 31642664645397 and 31642664645406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31642664645443) 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, 21916543 + ... + 23315663.

It is an arithmetic number, because the mean of its divisors is an integer number (2792008113246).

Almost surely, 2^{31642664645463} is an apocalyptic number.

31642664645463 is a deficient number, since it is larger than the sum of its proper divisors (13029465166473).

31642664645463 is a wasteful number, since it uses less digits than its factorization.

31642664645463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842594.

The product of its digits is 179159040, while the sum is 60.

The spelling of 31642664645463 in words is "thirty-one trillion, six hundred forty-two billion, six hundred sixty-four million, six hundred forty-five thousand, four hundred sixty-three".