239278448640 has 1120 divisors, whose sum is σ = 1013177145600. Its totient is φ = 47103344640.

The previous prime is 239278448639. The next prime is 239278448687. The reversal of 239278448640 is 46844872932.

It is a tau number, because it is divible by the number of its divisors (1120).

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 12593602551 + ... + 12593602569.

Almost surely, 2^239278448640 is an apocalyptic number.

239278448640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 239278448640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506588572800).

239278448640 is an abundant number, since it is smaller than the sum of its proper divisors (773898696960).

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

239278448640 is an frugal number, since it uses more digits than its factorization.

239278448640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 57.

The spelling of 239278448640 in words is "two hundred thirty-nine billion, two hundred seventy-eight million, four hundred forty-eight thousand, six hundred forty".