20585381190 has 32 divisors (see below), whose sum is σ = 53896271616. Its totient is φ = 4990395360.

The previous prime is 20585381189. The next prime is 20585381197. The reversal of 20585381190 is 9118358502.

It is a super-2 number, since 2×20585381190² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20585381197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31189642 + ... + 31190301.

It is an arithmetic number, because the mean of its divisors is an integer number (1684258488).

Almost surely, 2^20585381190 is an apocalyptic number.

20585381190 is an abundant number, since it is smaller than the sum of its proper divisors (33310890426).

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

20585381190 is a wasteful number, since it uses less digits than its factorization.

20585381190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62379964.

The product of its (nonzero) digits is 86400, while the sum is 42.

The spelling of 20585381190 in words is "twenty billion, five hundred eighty-five million, three hundred eighty-one thousand, one hundred ninety".