253422463640 has 32 divisors (see below), whose sum is σ = 571014016560. Its totient is φ = 101224368000.

The previous prime is 253422463639. The next prime is 253422463643. The reversal of 253422463640 is 46364224352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253422463643) 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, 4490906 + ... + 4546985.

Almost surely, 2^253422463640 is an apocalyptic number.

253422463640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253422463640 is an abundant number, since it is smaller than the sum of its proper divisors (317591552920).

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

253422463640 is a wasteful number, since it uses less digits than its factorization.

253422463640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9038603 (or 9038599 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 41.

Adding to 253422463640 its reverse (46364224352), we get a palindrome (299786687992).

The spelling of 253422463640 in words is "two hundred fifty-three billion, four hundred twenty-two million, four hundred sixty-three thousand, six hundred forty".