204367489956 has 72 divisors (see below), whose sum is σ = 609439993344. Its totient is φ = 56507137920.

The previous prime is 204367489919. The next prime is 204367490039. The reversal of 204367489956 is 659984763402.

204367489956 is a `hidden beast` number, since 2 + 0 + 4 + 3 + 67 + 489 + 95 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 204367489893 and 204367489902.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13072545 + ... + 13088168.

It is an arithmetic number, because the mean of its divisors is an integer number (8464444352).

Almost surely, 2^204367489956 is an apocalyptic number.

It is an amenable number.

204367489956 is an abundant number, since it is smaller than the sum of its proper divisors (405072503388).

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

204367489956 is a wasteful number, since it uses less digits than its factorization.

204367489956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26160761 (or 26160756 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 63.

The spelling of 204367489956 in words is "two hundred four billion, three hundred sixty-seven million, four hundred eighty-nine thousand, nine hundred fifty-six".