642510262863 has 12 divisors (see below), whose sum is σ = 1060651862608. Its totient is φ = 367148721600.

The previous prime is 642510262853. The next prime is 642510262873. The reversal of 642510262863 is 368262015246.

642510262863 is a `hidden beast` number, since 6 + 4 + 2 + 5 + 10 + 2 + 628 + 6 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (642510262853) and next prime (642510262873).

It is not a de Polignac number, because 642510262863 - 2⁴ = 642510262847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642510262853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5099287738 + ... + 5099287863.

Almost surely, 2^642510262863 is an apocalyptic number.

642510262863 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

642510262863 is a deficient number, since it is larger than the sum of its proper divisors (418141599745).

642510262863 is a wasteful number, since it uses less digits than its factorization.

642510262863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10198575614 (or 10198575611 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 642510262863 in words is "six hundred forty-two billion, five hundred ten million, two hundred sixty-two thousand, eight hundred sixty-three".