201415226664 has 128 divisors (see below), whose sum is σ = 538733825280. Its totient is φ = 62596300800.

The previous prime is 201415226629. The next prime is 201415226669. The reversal of 201415226664 is 466622514102.

It is a super-2 number, since 2×201415226664² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201415226669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29893504 + ... + 29900240.

It is an arithmetic number, because the mean of its divisors is an integer number (4208858010).

Almost surely, 2^201415226664 is an apocalyptic number.

201415226664 is a gapful number since it is divisible by the number (24) 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 201415226664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269366912640).

201415226664 is an abundant number, since it is smaller than the sum of its proper divisors (337318598616).

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

201415226664 is a wasteful number, since it uses less digits than its factorization.

201415226664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8131 (or 8127 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 201415226664 in words is "two hundred one billion, four hundred fifteen million, two hundred twenty-six thousand, six hundred sixty-four".