87772236139 has 8 divisors (see below), whose sum is σ = 100313031168. Its totient is φ = 75231917160.

The previous prime is 87772236113. The next prime is 87772236151. The reversal of 87772236139 is 93163227778.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87772236139 - 2⁹ = 87772235627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87772236139.

It is not an unprimeable number, because it can be changed into a prime (87772216139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471294 + ... + 630604.

It is an arithmetic number, because the mean of its divisors is an integer number (12539128896).

Almost surely, 2^87772236139 is an apocalyptic number.

87772236139 is a deficient number, since it is larger than the sum of its proper divisors (12540795029).

87772236139 is a wasteful number, since it uses less digits than its factorization.

87772236139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238025.

The product of its digits is 5334336, while the sum is 55.

The spelling of 87772236139 in words is "eighty-seven billion, seven hundred seventy-two million, two hundred thirty-six thousand, one hundred thirty-nine".