20031622729272 has 480 divisors, whose sum is σ = 74296554203520. Its totient is φ = 4976798682240.

The previous prime is 20031622729271. The next prime is 20031622729273. The reversal of 20031622729272 is 27292722613002.

20031622729272 is a `hidden beast` number, since 20 + 0 + 31 + 62 + 272 + 9 + 272 = 666.

It is an interprime number because it is at equal distance from previous prime (20031622729271) and next prime (20031622729273).

It is a super-2 number, since 2×20031622729272² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031622729271) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 6786463 + ... + 9280049.

It is an arithmetic number, because the mean of its divisors is an integer number (154784487924).

Almost surely, 2^{20031622729272} is an apocalyptic number.

20031622729272 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 20031622729272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37148277101760).

20031622729272 is an abundant number, since it is smaller than the sum of its proper divisors (54264931474248).

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

20031622729272 is a wasteful number, since it uses less digits than its factorization.

20031622729272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493653 (or 2493633 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 20031622729272 in words is "twenty trillion, thirty-one billion, six hundred twenty-two million, seven hundred twenty-nine thousand, two hundred seventy-two".