642510762848 has 24 divisors (see below), whose sum is σ = 1266614106912. Its totient is φ = 320830989696.

The previous prime is 642510762847. The next prime is 642510762853. The reversal of 642510762848 is 848267015246.

It is a super-2 number, since 2×642510762848² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 642510762848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642510762847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13237640 + ... + 13286087.

It is an arithmetic number, because the mean of its divisors is an integer number (52775587788).

Almost surely, 2^642510762848 is an apocalyptic number.

It is an amenable number.

642510762848 is a deficient number, since it is larger than the sum of its proper divisors (624103344064).

642510762848 is a wasteful number, since it uses less digits than its factorization.

642510762848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26524494 (or 26524486 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 53.

The spelling of 642510762848 in words is "six hundred forty-two billion, five hundred ten million, seven hundred sixty-two thousand, eight hundred forty-eight".