204026251087 has 8 divisors (see below), whose sum is σ = 213255988704. Its totient is φ = 194826432768.

The previous prime is 204026251069. The next prime is 204026251097. The reversal of 204026251087 is 780152620402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204026251087 is a prime.

It is a super-2 number, since 2×204026251087² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204026251097) 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, 7465878 + ... + 7493155.

It is an arithmetic number, because the mean of its divisors is an integer number (26656998588).

Almost surely, 2^204026251087 is an apocalyptic number.

204026251087 is a deficient number, since it is larger than the sum of its proper divisors (9229737617).

204026251087 is a wasteful number, since it uses less digits than its factorization.

204026251087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14959649.

The product of its (nonzero) digits is 53760, while the sum is 37.

Adding to 204026251087 its reverse (780152620402), we get a palindrome (984178871489).

The spelling of 204026251087 in words is "two hundred four billion, twenty-six million, two hundred fifty-one thousand, eighty-seven".