155914961280 has 512 divisors, whose sum is σ = 576559226880. Its totient is φ = 35522150400.

The previous prime is 155914961269. The next prime is 155914961281. The reversal of 155914961280 is 82169419551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155914961281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17792100 + ... + 17800860.

It is an arithmetic number, because the mean of its divisors is an integer number (1126092240).

Almost surely, 2^155914961280 is an apocalyptic number.

155914961280 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 155914961280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288279613440).

155914961280 is an abundant number, since it is smaller than the sum of its proper divisors (420644265600).

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

155914961280 is a wasteful number, since it uses less digits than its factorization.

155914961280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8850 (or 8838 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 51.

The spelling of 155914961280 in words is "one hundred fifty-five billion, nine hundred fourteen million, nine hundred sixty-one thousand, two hundred eighty".