155495406689280 has 1584 divisors, whose sum is σ = 684179743927680. Its totient is φ = 33670934986752.

The previous prime is 155495406689251. The next prime is 155495406689303. The reversal of 155495406689280 is 82986604594551.

155495406689280 is a `hidden beast` number, since 1 + 5 + 5 + 495 + 40 + 6 + 6 + 8 + 92 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 155495406689199 and 155495406689208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1158245839 + ... + 1158380081.

It is an arithmetic number, because the mean of its divisors is an integer number (431931656520).

Almost surely, 2^{155495406689280} is an apocalyptic number.

155495406689280 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 155495406689280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342089871963840).

155495406689280 is an abundant number, since it is smaller than the sum of its proper divisors (528684337238400).

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

155495406689280 is a wasteful number, since it uses less digits than its factorization.

155495406689280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134316 (or 134279 counting only the distinct ones).

The product of its (nonzero) digits is 746496000, while the sum is 72.

The spelling of 155495406689280 in words is "one hundred fifty-five trillion, four hundred ninety-five billion, four hundred six million, six hundred eighty-nine thousand, two hundred eighty".