155775073517560 has 512 divisors, whose sum is σ = 441620315136000. Its totient is φ = 48246788947968.

The previous prime is 155775073517537. The next prime is 155775073517563. The reversal of 155775073517560 is 65715370577551.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 155775073517492 and 155775073517501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155775073517563) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2172347227 + ... + 2172418933.

It is an arithmetic number, because the mean of its divisors is an integer number (862539678000).

Almost surely, 2^{155775073517560} is an apocalyptic number.

155775073517560 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 155775073517560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220810157568000).

155775073517560 is an abundant number, since it is smaller than the sum of its proper divisors (285845241618440).

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

155775073517560 is a wasteful number, since it uses less digits than its factorization.

155775073517560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71983 (or 71979 counting only the distinct ones).

The product of its (nonzero) digits is 135056250, while the sum is 64.

The spelling of 155775073517560 in words is "one hundred fifty-five trillion, seven hundred seventy-five billion, seventy-three million, five hundred seventeen thousand, five hundred sixty".