642023849036 has 24 divisors (see below), whose sum is σ = 1140389004720. Its totient is φ = 316199074752.

The previous prime is 642023849009. The next prime is 642023849053. The reversal of 642023849036 is 630948320246.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4275566 + ... + 4423178.

It is an arithmetic number, because the mean of its divisors is an integer number (47516208530).

Almost surely, 2^642023849036 is an apocalyptic number.

It is an amenable number.

642023849036 is a deficient number, since it is larger than the sum of its proper divisors (498365155684).

642023849036 is a wasteful number, since it uses less digits than its factorization.

642023849036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163913 (or 163911 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 47.

The spelling of 642023849036 in words is "six hundred forty-two billion, twenty-three million, eight hundred forty-nine thousand, thirty-six".