20752942212 has 18 divisors (see below), whose sum is σ = 52458826238. Its totient is φ = 6917647392.

The previous prime is 20752942211. The next prime is 20752942237. The reversal of 20752942212 is 21224925702.

It is a happy number.

20752942212 is a `hidden beast` number, since 207 + 5 + 29 + 422 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20561839236 + 191102976 = 143394^2 + 13824^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×20752942212² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 576470617 = 20752942212 / (2 + 0 + 7 + 5 + 2 + 9 + 4 + 2 + 2 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (20752942211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 288235273 + ... + 288235344.

Almost surely, 2^20752942212 is an apocalyptic number.

It is an amenable number.

20752942212 is an abundant number, since it is smaller than the sum of its proper divisors (31705884026).

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

20752942212 is a wasteful number, since it uses less digits than its factorization.

20752942212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576470627 (or 576470622 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 20752942212 in words is "twenty billion, seven hundred fifty-two million, nine hundred forty-two thousand, two hundred twelve".