204100400140 has 96 divisors (see below), whose sum is σ = 540387598464. Its totient is φ = 63018915840.

The previous prime is 204100400083. The next prime is 204100400171. The reversal of 204100400140 is 41004001402.

It is a super-2 number, since 2×204100400140² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1292979 + ... + 1442218.

It is an arithmetic number, because the mean of its divisors is an integer number (5629037484).

Almost surely, 2^204100400140 is an apocalyptic number.

204100400140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204100400140 is an abundant number, since it is smaller than the sum of its proper divisors (336287198324).

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

204100400140 is a wasteful number, since it uses less digits than its factorization.

204100400140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2735267 (or 2735265 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 204100400140 its reverse (41004001402), we get a palindrome (245104401542).

The spelling of 204100400140 in words is "two hundred four billion, one hundred million, four hundred thousand, one hundred forty".