20762128972292 has 24 divisors (see below), whose sum is σ = 36468179792856. Its totient is φ = 10342655785728.

The previous prime is 20762128972241. The next prime is 20762128972327. The reversal of 20762128972292 is 29227982126702.

It can be written as a sum of positive squares in 4 ways, for example, as 2890761650176 + 17871367322116 = 1700224^2 + 4227454^2 .

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11541128 + ... + 13218240.

It is an arithmetic number, because the mean of its divisors is an integer number (1519507491369).

Almost surely, 2^{20762128972292} is an apocalyptic number.

It is an amenable number.

20762128972292 is a deficient number, since it is larger than the sum of its proper divisors (15706050820564).

20762128972292 is a wasteful number, since it uses less digits than its factorization.

20762128972292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688567 (or 1688565 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 59.

The spelling of 20762128972292 in words is "twenty trillion, seven hundred sixty-two billion, one hundred twenty-eight million, nine hundred seventy-two thousand, two hundred ninety-two".