85388887551 has 16 divisors (see below), whose sum is σ = 124271607168. Its totient is φ = 51721845600.

The previous prime is 85388887547. The next prime is 85388887559. The reversal of 85388887551 is 15578888358.

It is not a de Polignac number, because 85388887551 - 2² = 85388887547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85388887559) 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, 665020 + ... + 782961.

It is an arithmetic number, because the mean of its divisors is an integer number (7766975448).

Almost surely, 2^85388887551 is an apocalyptic number.

85388887551 is a deficient number, since it is larger than the sum of its proper divisors (38882719617).

85388887551 is a wasteful number, since it uses less digits than its factorization.

85388887551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449782.

The product of its digits is 86016000, while the sum is 66.

The spelling of 85388887551 in words is "eighty-five billion, three hundred eighty-eight million, eight hundred eighty-seven thousand, five hundred fifty-one".