201245521512 has 64 divisors (see below), whose sum is σ = 575225671680. Its totient is φ = 57474873792.

The previous prime is 201245521487. The next prime is 201245521531. The reversal of 201245521512 is 215125542102.

It is a super-2 number, since 2×201245521512² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201245521512.

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, 159873 + ... + 654255.

It is an arithmetic number, because the mean of its divisors is an integer number (8987901120).

Almost surely, 2^201245521512 is an apocalyptic number.

It is an amenable number.

201245521512 is an abundant number, since it is smaller than the sum of its proper divisors (373980150168).

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

201245521512 is a wasteful number, since it uses less digits than its factorization.

201245521512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496822 (or 496818 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The spelling of 201245521512 in words is "two hundred one billion, two hundred forty-five million, five hundred twenty-one thousand, five hundred twelve".