201953806494 has 32 divisors (see below), whose sum is σ = 440668670976. Its totient is φ = 61192264320.

The previous prime is 201953806429. The next prime is 201953806517. The reversal of 201953806494 is 494608359102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574854 + ... + 856950.

It is an arithmetic number, because the mean of its divisors is an integer number (13770895968).

Almost surely, 2^201953806494 is an apocalyptic number.

201953806494 is an abundant number, since it is smaller than the sum of its proper divisors (238714864482).

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

201953806494 is a wasteful number, since it uses less digits than its factorization.

201953806494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292960.

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 201953806494 in words is "two hundred one billion, nine hundred fifty-three million, eight hundred six thousand, four hundred ninety-four".