205896472490 has 16 divisors (see below), whose sum is σ = 370620538848. Its totient is φ = 82357058256.

The previous prime is 205896472471. The next prime is 205896472513. The reversal of 205896472490 is 94274698502.

It is a happy number.

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, 488669 + ... + 806591.

It is an arithmetic number, because the mean of its divisors is an integer number (23163783678).

Almost surely, 2^205896472490 is an apocalyptic number.

205896472490 is a deficient number, since it is larger than the sum of its proper divisors (164724066358).

205896472490 is a wasteful number, since it uses less digits than its factorization.

205896472490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382693.

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 205896472490 in words is "two hundred five billion, eight hundred ninety-six million, four hundred seventy-two thousand, four hundred ninety".