20952642078105 has 32 divisors (see below), whose sum is σ = 34767591206400. Its totient is φ = 10762229060352.

The previous prime is 20952642078089. The next prime is 20952642078131. The reversal of 20952642078105 is 50187024625902.

It is not a de Polignac number, because 20952642078105 - 2⁴ = 20952642078089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60491025 + ... + 60836414.

It is an arithmetic number, because the mean of its divisors is an integer number (1086487225200).

Almost surely, 2^{20952642078105} is an apocalyptic number.

It is an amenable number.

20952642078105 is a deficient number, since it is larger than the sum of its proper divisors (13814949128295).

20952642078105 is a wasteful number, since it uses less digits than its factorization.

20952642078105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121327873.

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 20952642078105 in words is "twenty trillion, nine hundred fifty-two billion, six hundred forty-two million, seventy-eight thousand, one hundred five".