20894154141 has 24 divisors (see below), whose sum is σ = 32414276640. Its totient is φ = 11936931552.

The previous prime is 20894154133. The next prime is 20894154143. The reversal of 20894154141 is 14145149802.

It is not a de Polignac number, because 20894154141 - 2³ = 20894154133 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20894154141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20894154143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 819315 + ... + 844431.

It is an arithmetic number, because the mean of its divisors is an integer number (1350594860).

Almost surely, 2^20894154141 is an apocalyptic number.

20894154141 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20894154141 is a deficient number, since it is larger than the sum of its proper divisors (11520122499).

20894154141 is a wasteful number, since it uses less digits than its factorization.

20894154141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30793 (or 30786 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 20894154141 in words is "twenty billion, eight hundred ninety-four million, one hundred fifty-four thousand, one hundred forty-one".