20777373854 has 16 divisors (see below), whose sum is σ = 33027602256. Its totient is φ = 9769219200.

The previous prime is 20777373853. The next prime is 20777373857. The reversal of 20777373854 is 45837377702.

It is a junction number, because it is equal to n+sod(n) for n = 20777373796 and 20777373805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20777373853) 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, 221117 + ... + 300744.

It is an arithmetic number, because the mean of its divisors is an integer number (2064225141).

Almost surely, 2^20777373854 is an apocalyptic number.

20777373854 is a deficient number, since it is larger than the sum of its proper divisors (12250228402).

20777373854 is a wasteful number, since it uses less digits than its factorization.

20777373854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523051.

The product of its (nonzero) digits is 6914880, while the sum is 53.

The spelling of 20777373854 in words is "twenty billion, seven hundred seventy-seven million, three hundred seventy-three thousand, eight hundred fifty-four".