155866120908960 has 1152 divisors, whose sum is σ = 677009435074560. Its totient is φ = 29693338214400.

The previous prime is 155866120908959. The next prime is 155866120909033. The reversal of 155866120908960 is 69809021668551.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 155866120908891 and 155866120908900.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 151874662 + ... + 152897498.

It is an arithmetic number, because the mean of its divisors is an integer number (587681801280).

Almost surely, 2^{155866120908960} is an apocalyptic number.

155866120908960 is a gapful number since it is divisible by the number (10) 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 155866120908960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338504717537280).

155866120908960 is an abundant number, since it is smaller than the sum of its proper divisors (521143314165600).

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

155866120908960 is a wasteful number, since it uses less digits than its factorization.

155866120908960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022930 (or 1022915 counting only the distinct ones).

The product of its (nonzero) digits is 55987200, while the sum is 66.

The spelling of 155866120908960 in words is "one hundred fifty-five trillion, eight hundred sixty-six billion, one hundred twenty million, nine hundred eight thousand, nine hundred sixty".