204267031540 has 72 divisors (see below), whose sum is σ = 506722976928. Its totient is φ = 68565144960.

The previous prime is 204267031537. The next prime is 204267031603. The reversal of 204267031540 is 45130762402.

It is a junction number, because it is equal to n+sod(n) for n = 204267031496 and 204267031505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2709822 + ... + 2784181.

It is an arithmetic number, because the mean of its divisors is an integer number (7037819124).

Almost surely, 2^204267031540 is an apocalyptic number.

204267031540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204267031540 is an abundant number, since it is smaller than the sum of its proper divisors (302455945388).

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

204267031540 is a wasteful number, since it uses less digits than its factorization.

204267031540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5494049 (or 5494034 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

Adding to 204267031540 its reverse (45130762402), we get a palindrome (249397793942).

The spelling of 204267031540 in words is "two hundred four billion, two hundred sixty-seven million, thirty-one thousand, five hundred forty".