155115290736 has 320 divisors, whose sum is σ = 526950400000. Its totient is φ = 42750892800.

The previous prime is 155115290647. The next prime is 155115290779. The reversal of 155115290736 is 637092511551.

155115290736 is a `hidden beast` number, since 1 + 5 + 51 + 1 + 529 + 0 + 73 + 6 = 666.

It is a super-2 number, since 2×155115290736² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155115290691 and 155115290700.

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, 31026765 + ... + 31031763.

It is an arithmetic number, because the mean of its divisors is an integer number (1646720000).

Almost surely, 2^155115290736 is an apocalyptic number.

155115290736 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 155115290736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263475200000).

155115290736 is an abundant number, since it is smaller than the sum of its proper divisors (371835109264).

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

155115290736 is a wasteful number, since it uses less digits than its factorization.

155115290736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5385 (or 5373 counting only the distinct ones).

The product of its (nonzero) digits is 283500, while the sum is 45.

The spelling of 155115290736 in words is "one hundred fifty-five billion, one hundred fifteen million, two hundred ninety thousand, seven hundred thirty-six".