201244457920 has 112 divisors (see below), whose sum is σ = 545507923968. Its totient is φ = 69998044160.

The previous prime is 201244457903. The next prime is 201244457941. The reversal of 201244457920 is 29754442102.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1161904 + ... + 1323823.

It is an arithmetic number, because the mean of its divisors is an integer number (4870606464).

Almost surely, 2^201244457920 is an apocalyptic number.

201244457920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201244457920 is an abundant number, since it is smaller than the sum of its proper divisors (344263466048).

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

201244457920 is a wasteful number, since it uses less digits than its factorization.

201244457920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485778 (or 2485768 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 201244457920 in words is "two hundred one billion, two hundred forty-four million, four hundred fifty-seven thousand, nine hundred twenty".