253682757678 has 64 divisors (see below), whose sum is σ = 590981432832. Its totient is φ = 71089799040.

The previous prime is 253682757659. The next prime is 253682757689. The reversal of 253682757678 is 876757286352.

It is a super-2 number, since 2×253682757678² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 7397700 + ... + 7431912.

It is an arithmetic number, because the mean of its divisors is an integer number (9234084888).

Almost surely, 2^253682757678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253682757678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295490716416).

253682757678 is an abundant number, since it is smaller than the sum of its proper divisors (337298675154).

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

253682757678 is a wasteful number, since it uses less digits than its factorization.

253682757678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37609.

The product of its digits is 237081600, while the sum is 66.

The spelling of 253682757678 in words is "two hundred fifty-three billion, six hundred eighty-two million, seven hundred fifty-seven thousand, six hundred seventy-eight".