155332787233551 has 16 divisors (see below), whose sum is σ = 218254936527360. Its totient is φ = 98072071143200.

The previous prime is 155332787233517. The next prime is 155332787233567.

155332787233551 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 155332787233551 - 2¹⁹ = 155332786709263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155332787233651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11144546571 + ... + 11144560508.

It is an arithmetic number, because the mean of its divisors is an integer number (13640933532960).

Almost surely, 2^{155332787233551} is an apocalyptic number.

155332787233551 is a deficient number, since it is larger than the sum of its proper divisors (62922149293809).

155332787233551 is a wasteful number, since it uses less digits than its factorization.

155332787233551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22289107206.

The product of its digits is 79380000, while the sum is 60.

The spelling of 155332787233551 in words is "one hundred fifty-five trillion, three hundred thirty-two billion, seven hundred eighty-seven million, two hundred thirty-three thousand, five hundred fifty-one".