201622656312 has 288 divisors, whose sum is σ = 709082225280. Its totient is φ = 51151201920.

The previous prime is 201622656299. The next prime is 201622656329. The reversal of 201622656312 is 213656226102.

201622656312 is a `hidden beast` number, since 2 + 0 + 1 + 62 + 26 + 563 + 12 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1608333 + ... + 1729155.

It is an arithmetic number, because the mean of its divisors is an integer number (2462091060).

Almost surely, 2^201622656312 is an apocalyptic number.

201622656312 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 201622656312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354541112640).

201622656312 is an abundant number, since it is smaller than the sum of its proper divisors (507459568968).

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

201622656312 is a wasteful number, since it uses less digits than its factorization.

201622656312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120903 (or 120889 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 201622656312 in words is "two hundred one billion, six hundred twenty-two million, six hundred fifty-six thousand, three hundred twelve".