20266020401995 has 16 divisors (see below), whose sum is σ = 24982536192480. Its totient is φ = 15770820282624.

The previous prime is 20266020401981. The next prime is 20266020402013. The reversal of 20266020401995 is 59910402066202.

It is a cyclic number.

It is not a de Polignac number, because 20266020401995 - 2¹⁹ = 20266019877707 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12467682 + ... + 13999111.

It is an arithmetic number, because the mean of its divisors is an integer number (1561408512030).

Almost surely, 2^{20266020401995} is an apocalyptic number.

20266020401995 is a deficient number, since it is larger than the sum of its proper divisors (4716515790485).

20266020401995 is a wasteful number, since it uses less digits than its factorization.

20266020401995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26470974.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 20266020401995 in words is "twenty trillion, two hundred sixty-six billion, twenty million, four hundred one thousand, nine hundred ninety-five".