383256145720 has 256 divisors, whose sum is σ = 1053305856000. Its totient is φ = 122514923520.

The previous prime is 383256145697. The next prime is 383256145813. The reversal of 383256145720 is 27541652383.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 256701294 + ... + 256702786.

It is an arithmetic number, because the mean of its divisors is an integer number (4114476000).

Almost surely, 2^383256145720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 383256145720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (526652928000).

383256145720 is an abundant number, since it is smaller than the sum of its proper divisors (670049710280).

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

383256145720 is a wasteful number, since it uses less digits than its factorization.

383256145720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998 (or 1994 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 383256145720 in words is "three hundred eighty-three billion, two hundred fifty-six million, one hundred forty-five thousand, seven hundred twenty".