201985792494 has 32 divisors (see below), whose sum is σ = 421694864640. Its totient is φ = 64376930112.

The previous prime is 201985792493. The next prime is 201985792579. The reversal of 201985792494 is 494297589102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201985792493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91714 + ... + 642170.

It is an arithmetic number, because the mean of its divisors is an integer number (13177964520).

Almost surely, 2^201985792494 is an apocalyptic number.

201985792494 is an abundant number, since it is smaller than the sum of its proper divisors (219709072146).

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

201985792494 is a wasteful number, since it uses less digits than its factorization.

201985792494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553144.

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 201985792494 in words is "two hundred one billion, nine hundred eighty-five million, seven hundred ninety-two thousand, four hundred ninety-four".