88228626391 has 4 divisors (see below), whose sum is σ = 88307192632. Its totient is φ = 88150060152.

The previous prime is 88228626319. The next prime is 88228626407. The reversal of 88228626391 is 19362682288.

It is a happy number.

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 88228626391 - 2¹³ = 88228618199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88228626301) 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, 39281436 + ... + 39283681.

It is an arithmetic number, because the mean of its divisors is an integer number (22076798158).

Almost surely, 2^88228626391 is an apocalyptic number.

88228626391 is a deficient number, since it is larger than the sum of its proper divisors (78566241).

88228626391 is a wasteful number, since it uses less digits than its factorization.

88228626391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78566240.

The product of its digits is 3981312, while the sum is 55.

The spelling of 88228626391 in words is "eighty-eight billion, two hundred twenty-eight million, six hundred twenty-six thousand, three hundred ninety-one".