201249913830 has 64 divisors (see below), whose sum is σ = 552066513408. Its totient is φ = 45994417920.

The previous prime is 201249913817. The next prime is 201249913861. The reversal of 201249913830 is 38319942102.

201249913830 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1828770 + ... + 1935690.

It is an arithmetic number, because the mean of its divisors is an integer number (8626039272).

Almost surely, 2^201249913830 is an apocalyptic number.

201249913830 is an abundant number, since it is smaller than the sum of its proper divisors (350816599578).

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

201249913830 is a wasteful number, since it uses less digits than its factorization.

201249913830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115901.

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 201249913830 in words is "two hundred one billion, two hundred forty-nine million, nine hundred thirteen thousand, eight hundred thirty".