153320438865 has 256 divisors, whose sum is σ = 304258083840. Its totient is φ = 65569996800.

The previous prime is 153320438833. The next prime is 153320438881. The reversal of 153320438865 is 568834023351.

It is a happy number.

It is not a de Polignac number, because 153320438865 - 2⁵ = 153320438833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 364181355 + ... + 364181775.

It is an arithmetic number, because the mean of its divisors is an integer number (1188508140).

Almost surely, 2^153320438865 is an apocalyptic number.

153320438865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

153320438865 is a deficient number, since it is larger than the sum of its proper divisors (150937644975).

153320438865 is a wasteful number, since it uses less digits than its factorization.

153320438865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 153320438865 in words is "one hundred fifty-three billion, three hundred twenty million, four hundred thirty-eight thousand, eight hundred sixty-five".