20740567854 has 32 divisors (see below), whose sum is σ = 42344087040. Its totient is φ = 6770988000.

The previous prime is 20740567811. The next prime is 20740567877. The reversal of 20740567854 is 45876504702.

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, 96889 + ... + 225540.

It is an arithmetic number, because the mean of its divisors is an integer number (1323252720).

Almost surely, 2^20740567854 is an apocalyptic number.

20740567854 is an abundant number, since it is smaller than the sum of its proper divisors (21603519186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20740567854 is a wasteful number, since it uses less digits than its factorization.

20740567854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322656.

The product of its (nonzero) digits is 1881600, while the sum is 48.

The spelling of 20740567854 in words is "twenty billion, seven hundred forty million, five hundred sixty-seven thousand, eight hundred fifty-four".