239145818840 has 64 divisors (see below), whose sum is σ = 543725991360. Its totient is φ = 94657024000.

The previous prime is 239145818839. The next prime is 239145818867. The reversal of 239145818840 is 48818541932.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2745965 + ... + 2831715.

It is an arithmetic number, because the mean of its divisors is an integer number (8495718615).

Almost surely, 2^239145818840 is an apocalyptic number.

239145818840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

239145818840 is an abundant number, since it is smaller than the sum of its proper divisors (304580172520).

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

239145818840 is a wasteful number, since it uses less digits than its factorization.

239145818840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86492 (or 86488 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 53.

The spelling of 239145818840 in words is "two hundred thirty-nine billion, one hundred forty-five million, eight hundred eighteen thousand, eight hundred forty".