155200233511 has 4 divisors (see below), whose sum is σ = 155356844224. Its totient is φ = 155043622800.

The previous prime is 155200233499. The next prime is 155200233533. The reversal of 155200233511 is 115332002551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115332002551 = 225341 ⋅511811.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155200233511 is a prime.

It is a super-2 number, since 2×155200233511² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155200233511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155200233571) 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, 78303870 + ... + 78305851.

It is an arithmetic number, because the mean of its divisors is an integer number (38839211056).

Almost surely, 2^155200233511 is an apocalyptic number.

155200233511 is a deficient number, since it is larger than the sum of its proper divisors (156610713).

155200233511 is an equidigital number, since it uses as much as digits as its factorization.

155200233511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156610712.

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 155200233511 in words is "one hundred fifty-five billion, two hundred million, two hundred thirty-three thousand, five hundred eleven".