155802368272 has 20 divisors (see below), whose sum is σ = 303041676636. Its totient is φ = 77598064640.

The previous prime is 155802368269. The next prime is 155802368279. The reversal of 155802368272 is 272863208551.

It can be written as a sum of positive squares in 2 ways, for example, as 87369901056 + 68432467216 = 295584^2 + 261596^2 .

It is not an unprimeable number, because it can be changed into a prime (155802368279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18940729 + ... + 18948952.

Almost surely, 2^155802368272 is an apocalyptic number.

It is an amenable number.

155802368272 is a deficient number, since it is larger than the sum of its proper divisors (147239308364).

155802368272 is a wasteful number, since it uses less digits than its factorization.

155802368272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37889946 (or 37889940 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 155802368272 in words is "one hundred fifty-five billion, eight hundred two million, three hundred sixty-eight thousand, two hundred seventy-two".