155065534272 has 560 divisors, whose sum is σ = 536447463552. Its totient is φ = 43767889920.

The previous prime is 155065534243. The next prime is 155065534333. The reversal of 155065534272 is 272435560551.

It is a happy number.

155065534272 is a `hidden beast` number, since 1 + 5 + 50 + 6 + 553 + 42 + 7 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 99848248 + ... + 99849800.

Almost surely, 2^155065534272 is an apocalyptic number.

155065534272 is a gapful number since it is divisible by the number (12) 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 155065534272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268223731776).

155065534272 is an abundant number, since it is smaller than the sum of its proper divisors (381381929280).

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

155065534272 is a wasteful number, since it uses less digits than its factorization.

155065534272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708 (or 1689 counting only the distinct ones).

The product of its (nonzero) digits is 1260000, while the sum is 45.

The spelling of 155065534272 in words is "one hundred fifty-five billion, sixty-five million, five hundred thirty-four thousand, two hundred seventy-two".