204604646642 has 16 divisors (see below), whose sum is σ = 334992543264. Its totient is φ = 92950740000.

The previous prime is 204604646539. The next prime is 204604646663. The reversal of 204604646642 is 246646406402.

It is a super-2 number, since 2×204604646642² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204604646593 and 204604646602.

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, 2527859 + ... + 2607542.

It is an arithmetic number, because the mean of its divisors is an integer number (20937033954).

Almost surely, 2^204604646642 is an apocalyptic number.

204604646642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

204604646642 is a deficient number, since it is larger than the sum of its proper divisors (130387896622).

204604646642 is a wasteful number, since it uses less digits than its factorization.

204604646642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5137225.

The product of its (nonzero) digits is 1327104, while the sum is 44.

The spelling of 204604646642 in words is "two hundred four billion, six hundred four million, six hundred forty-six thousand, six hundred forty-two".