642315513246 has 32 divisors (see below), whose sum is σ = 1446622626816. Its totient is φ = 188362320000.

The previous prime is 642315513221. The next prime is 642315513263.

642315513246 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×642315513246³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 642315513198 and 642315513207.

It is a congruent number.

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, 156966555 + ... + 156970646.

It is an arithmetic number, because the mean of its divisors is an integer number (45206957088).

Almost surely, 2^642315513246 is an apocalyptic number.

642315513246 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

642315513246 is an abundant number, since it is smaller than the sum of its proper divisors (804307113570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642315513246 is a wasteful number, since it uses less digits than its factorization.

642315513246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313937248.

The product of its digits is 518400, while the sum is 42.

The spelling of 642315513246 in words is "six hundred forty-two billion, three hundred fifteen million, five hundred thirteen thousand, two hundred forty-six".