253166787740 has 12 divisors (see below), whose sum is σ = 531650254296. Its totient is φ = 101266715088.

The previous prime is 253166787673. The next prime is 253166787767. The reversal of 253166787740 is 47787661352.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6329169674 + ... + 6329169713.

It is an arithmetic number, because the mean of its divisors is an integer number (44304187858).

Almost surely, 2^253166787740 is an apocalyptic number.

253166787740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253166787740 is an abundant number, since it is smaller than the sum of its proper divisors (278483466556).

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

253166787740 is a wasteful number, since it uses less digits than its factorization.

253166787740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12658339396 (or 12658339394 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 56.

The spelling of 253166787740 in words is "two hundred fifty-three billion, one hundred sixty-six million, seven hundred eighty-seven thousand, seven hundred forty".