20352130011972 has 96 divisors (see below), whose sum is σ = 57569644339200. Its totient is φ = 6166448071200.

The previous prime is 20352130011971. The next prime is 20352130011973. The reversal of 20352130011972 is 27911003125302.

It is a happy number.

20352130011972 is a `hidden beast` number, since 2 + 0 + 3 + 521 + 30 + 0 + 11 + 97 + 2 = 666.

20352130011972 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (20352130011971) and next prime (20352130011973).

It is a super-2 number, since 2×20352130011972² (a number of 27 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (20352130011971) 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, 7308397 + ... + 9701387.

It is an arithmetic number, because the mean of its divisors is an integer number (599683795200).

Almost surely, 2^{20352130011972} is an apocalyptic number.

20352130011972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20352130011972 is an abundant number, since it is smaller than the sum of its proper divisors (37217514327228).

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

20352130011972 is a wasteful number, since it uses less digits than its factorization.

20352130011972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400174 (or 2400166 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The spelling of 20352130011972 in words is "twenty trillion, three hundred fifty-two billion, one hundred thirty million, eleven thousand, nine hundred seventy-two".