250690401720 has 96 divisors (see below), whose sum is σ = 888811438320. Its totient is φ = 60773429760.

The previous prime is 250690401701. The next prime is 250690401721. The reversal of 250690401720 is 27104096052.

250690401720 is a `hidden beast` number, since 2 + 506 + 90 + 40 + 1 + 7 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250690401721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31648869 + ... + 31656788.

Almost surely, 2^250690401720 is an apocalyptic number.

250690401720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250690401720 is an abundant number, since it is smaller than the sum of its proper divisors (638121036600).

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

250690401720 is a wasteful number, since it uses less digits than its factorization.

250690401720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63305685 (or 63305678 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

Adding to 250690401720 its reverse (27104096052), we get a palindrome (277794497772).

The spelling of 250690401720 in words is "two hundred fifty billion, six hundred ninety million, four hundred one thousand, seven hundred twenty".