20377854185 has 64 divisors (see below), whose sum is σ = 28860862464. Its totient is φ = 13669171200.

The previous prime is 20377854169. The next prime is 20377854221. The reversal of 20377854185 is 58145877302.

It is not a de Polignac number, because 20377854185 - 2⁴ = 20377854169 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19764620 + ... + 19765650.

It is an arithmetic number, because the mean of its divisors is an integer number (450950976).

Almost surely, 2^20377854185 is an apocalyptic number.

It is an amenable number.

20377854185 is a deficient number, since it is larger than the sum of its proper divisors (8483008279).

20377854185 is a wasteful number, since it uses less digits than its factorization.

20377854185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674.

The product of its (nonzero) digits is 1881600, while the sum is 50.

The spelling of 20377854185 in words is "twenty billion, three hundred seventy-seven million, eight hundred fifty-four thousand, one hundred eighty-five".