642611131216 has 40 divisors (see below), whose sum is σ = 1282564562400. Its totient is φ = 311727029376.

The previous prime is 642611131181. The next prime is 642611131229. The reversal of 642611131216 is 612131116246.

It is a congruent number.

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, 3031810 + ... + 3236833.

It is an arithmetic number, because the mean of its divisors is an integer number (32064114060).

Almost surely, 2^642611131216 is an apocalyptic number.

It is an amenable number.

642611131216 is a deficient number, since it is larger than the sum of its proper divisors (639953431184).

642611131216 is a wasteful number, since it uses less digits than its factorization.

642611131216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6268843 (or 6268837 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The spelling of 642611131216 in words is "six hundred forty-two billion, six hundred eleven million, one hundred thirty-one thousand, two hundred sixteen".