155275436736 has 504 divisors, whose sum is σ = 539936277504. Its totient is φ = 42491796480.

The previous prime is 155275436731. The next prime is 155275436737. The reversal of 155275436736 is 637634572551.

155275436736 is a `hidden beast` number, since 1 + 5 + 5 + 2 + 7 + 543 + 67 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is a super-2 number, since 2×155275436736² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155275436731) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 90118371 + ... + 90120093.

Almost surely, 2^155275436736 is an apocalyptic number.

155275436736 is a gapful number since it is divisible by the number (16) 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 155275436736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269968138752).

155275436736 is an abundant number, since it is smaller than the sum of its proper divisors (384660840768).

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

155275436736 is a wasteful number, since it uses less digits than its factorization.

155275436736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889 (or 1869 counting only the distinct ones).

The product of its digits is 15876000, while the sum is 54.

The spelling of 155275436736 in words is "one hundred fifty-five billion, two hundred seventy-five million, four hundred thirty-six thousand, seven hundred thirty-six".