20292921285 has 64 divisors (see below), whose sum is σ = 40007761920. Its totient is φ = 8553242880.

The previous prime is 20292921269. The next prime is 20292921349. The reversal of 20292921285 is 58212929202.

It is not a de Polignac number, because 20292921285 - 2⁴ = 20292921269 is a prime.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 1235356 + ... + 1251674.

It is an arithmetic number, because the mean of its divisors is an integer number (625121280).

Almost surely, 2^20292921285 is an apocalyptic number.

It is an amenable number.

20292921285 is a deficient number, since it is larger than the sum of its proper divisors (19714840635).

20292921285 is a wasteful number, since it uses less digits than its factorization.

20292921285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17258.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 20292921285 in words is "twenty billion, two hundred ninety-two million, nine hundred twenty-one thousand, two hundred eighty-five".