155973780480 has 352 divisors, whose sum is σ = 572307399936. Its totient is φ = 35515662336.

The previous prime is 155973780461. The next prime is 155973780527. The reversal of 155973780480 is 84087379551.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 155973780480.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29780422 + ... + 29785658.

Almost surely, 2^155973780480 is an apocalyptic number.

155973780480 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 155973780480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286153699968).

155973780480 is an abundant number, since it is smaller than the sum of its proper divisors (416333619456).

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

155973780480 is a wasteful number, since it uses less digits than its factorization.

155973780480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5549 (or 5531 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 57.

The spelling of 155973780480 in words is "one hundred fifty-five billion, nine hundred seventy-three million, seven hundred eighty thousand, four hundred eighty".