20656802995 has 8 divisors (see below), whose sum is σ = 25208302320. Its totient is φ = 16245349920.

The previous prime is 20656802993. The next prime is 20656803007. The reversal of 20656802995 is 59920865602.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20656802995 - 2¹ = 20656802993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20656802993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35011236 + ... + 35011825.

It is an arithmetic number, because the mean of its divisors is an integer number (3151037790).

Almost surely, 2^20656802995 is an apocalyptic number.

20656802995 is a deficient number, since it is larger than the sum of its proper divisors (4551499325).

20656802995 is an equidigital number, since it uses as much as digits as its factorization.

20656802995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70023125.

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 20656802995 in words is "twenty billion, six hundred fifty-six million, eight hundred two thousand, nine hundred ninety-five".