15642202424640 has 112 divisors (see below), whose sum is σ = 54178901161920. Its totient is φ = 3792049070080.

The previous prime is 15642202424617. The next prime is 15642202424671. The reversal of 15642202424640 is 4642420224651.

It is a junction number, because it is equal to n+sod(n) for n = 15642202424592 and 15642202424601.

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, 740624025 + ... + 740645144.

Almost surely, 2^{15642202424640} is an apocalyptic number.

15642202424640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15642202424640 is an abundant number, since it is smaller than the sum of its proper divisors (38536698737280).

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

15642202424640 is a wasteful number, since it uses less digits than its factorization.

15642202424640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481269200 (or 1481269190 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 42.

The spelling of 15642202424640 in words is "fifteen trillion, six hundred forty-two billion, two hundred two million, four hundred twenty-four thousand, six hundred forty".