87778852755331 has 4 divisors (see below), whose sum is σ = 87951306297600. Its totient is φ = 87606399213064.

The previous prime is 87778852755289. The next prime is 87778852755353. The reversal of 87778852755331 is 13355725887778.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87778852755331 - 2⁹ = 87778852754819 is a prime.

It is a super-2 number, since 2×87778852755331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87778852755731) 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, 86226770371 + ... + 86226771388.

It is an arithmetic number, because the mean of its divisors is an integer number (21987826574400).

Almost surely, 2^{87778852755331} is an apocalyptic number.

87778852755331 is a deficient number, since it is larger than the sum of its proper divisors (172453542269).

87778852755331 is a wasteful number, since it uses less digits than its factorization.

87778852755331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172453542268.

The product of its digits is 2765952000, while the sum is 76.

The spelling of 87778852755331 in words is "eighty-seven trillion, seven hundred seventy-eight billion, eight hundred fifty-two million, seven hundred fifty-five thousand, three hundred thirty-one".