155447292000 has 768 divisors, whose sum is σ = 683794814976. Its totient is φ = 29813760000.

The previous prime is 155447291971. The next prime is 155447292017. The reversal of 155447292000 is 292744551.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 155447292000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12005530 + ... + 12018470.

It is an arithmetic number, because the mean of its divisors is an integer number (890357832).

Almost surely, 2^155447292000 is an apocalyptic number.

155447292000 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 155447292000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341897407488).

155447292000 is an abundant number, since it is smaller than the sum of its proper divisors (528347522976).

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

155447292000 is a wasteful number, since it uses less digits than its factorization.

155447292000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13000 (or 12982 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 155447292000 in words is "one hundred fifty-five billion, four hundred forty-seven million, two hundred ninety-two thousand".