201565026432 has 288 divisors, whose sum is σ = 736062865200. Its totient is φ = 52354391040.

The previous prime is 201565026389. The next prime is 201565026451. The reversal of 201565026432 is 234620565102.

201565026432 is a `hidden beast` number, since 2 + 0 + 1 + 5 + 6 + 5 + 0 + 2 + 643 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 458619 + ... + 783237.

Almost surely, 2^201565026432 is an apocalyptic number.

201565026432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201565026432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368031432600).

201565026432 is an abundant number, since it is smaller than the sum of its proper divisors (534497838768).

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

201565026432 is a wasteful number, since it uses less digits than its factorization.

201565026432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324664 (or 324642 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 201565026432 in words is "two hundred one billion, five hundred sixty-five million, twenty-six thousand, four hundred thirty-two".