642443116876 has 48 divisors (see below), whose sum is σ = 1230459310080. Its totient is φ = 291073670720.

The previous prime is 642443116787. The next prime is 642443116901. The reversal of 642443116876 is 678611344246.

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, 28788915 + ... + 28811221.

It is an arithmetic number, because the mean of its divisors is an integer number (25634568960).

Almost surely, 2^642443116876 is an apocalyptic number.

It is an amenable number.

642443116876 is a deficient number, since it is larger than the sum of its proper divisors (588016193204).

642443116876 is a wasteful number, since it uses less digits than its factorization.

642443116876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24414 (or 24412 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 52.

The spelling of 642443116876 in words is "six hundred forty-two billion, four hundred forty-three million, one hundred sixteen thousand, eight hundred seventy-six".