20894554742 has 32 divisors (see below), whose sum is σ = 32216952960. Its totient is φ = 10159934400.

The previous prime is 20894554717. The next prime is 20894554763. The reversal of 20894554742 is 24745549802.

It is a congruent number.

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, 12533393 + ... + 12535059.

It is an arithmetic number, because the mean of its divisors is an integer number (1006779780).

Almost surely, 2^20894554742 is an apocalyptic number.

20894554742 is a deficient number, since it is larger than the sum of its proper divisors (11322398218).

20894554742 is a wasteful number, since it uses less digits than its factorization.

20894554742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876.

The product of its (nonzero) digits is 3225600, while the sum is 50.

The spelling of 20894554742 in words is "twenty billion, eight hundred ninety-four million, five hundred fifty-four thousand, seven hundred forty-two".