20894154142 has 8 divisors (see below), whose sum is σ = 31466097432. Its totient is φ = 10405455000.

The previous prime is 20894154133. The next prime is 20894154143. The reversal of 20894154142 is 24145149802.

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

It is a junction number, because it is equal to n+sod(n) for n = 20894154095 and 20894154104.

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 3 ways as a sum of consecutive naturals, for example, 20810409 + ... + 20811412.

It is an arithmetic number, because the mean of its divisors is an integer number (3933262179).

Almost surely, 2^20894154142 is an apocalyptic number.

20894154142 is a deficient number, since it is larger than the sum of its proper divisors (10571943290).

20894154142 is a wasteful number, since it uses less digits than its factorization.

20894154142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41622074.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 20894154142 in words is "twenty billion, eight hundred ninety-four million, one hundred fifty-four thousand, one hundred forty-two".