155516506505022 has 128 divisors (see below), whose sum is σ = 365551216128000. Its totient is φ = 43678823408640.

The previous prime is 155516506504967. The next prime is 155516506505081. The reversal of 155516506505022 is 220505605615551.

It is a super-2 number, since 2×155516506505022² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3129754 + ... + 17911682.

It is an arithmetic number, because the mean of its divisors is an integer number (2855868876000).

Almost surely, 2^{155516506505022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155516506505022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182775608064000).

155516506505022 is an abundant number, since it is smaller than the sum of its proper divisors (210034709622978).

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

155516506505022 is a wasteful number, since it uses less digits than its factorization.

155516506505022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14782226.

The product of its (nonzero) digits is 2250000, while the sum is 48.

The spelling of 155516506505022 in words is "one hundred fifty-five trillion, five hundred sixteen billion, five hundred six million, five hundred five thousand, twenty-two".