20958054670081 has 8 divisors (see below), whose sum is σ = 21075529832000. Its totient is φ = 20840805206640.

The previous prime is 20958054670073. The next prime is 20958054670123. The reversal of 20958054670081 is 18007645085902.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20958054670081 - 2³ = 20958054670073 is a prime.

It is a super-2 number, since 2×20958054670081² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20958054670061) 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, 56238381 + ... + 56609818.

It is an arithmetic number, because the mean of its divisors is an integer number (2634441229000).

Almost surely, 2^{20958054670081} is an apocalyptic number.

It is an amenable number.

20958054670081 is a deficient number, since it is larger than the sum of its proper divisors (117475161919).

20958054670081 is a wasteful number, since it uses less digits than its factorization.

20958054670081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112849239.

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 20958054670081 in words is "twenty trillion, nine hundred fifty-eight billion, fifty-four million, six hundred seventy thousand, eighty-one".