87772572571 has 2 divisors, whose sum is σ = 87772572572. Its totient is φ = 87772572570.

The previous prime is 87772572529. The next prime is 87772572677. The reversal of 87772572571 is 17527527778.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87772572571 - 2³³ = 79182637979 is a prime.

It is not a weakly prime, because it can be changed into another prime (87772572871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43886286285 + 43886286286.

It is an arithmetic number, because the mean of its divisors is an integer number (43886286286).

Almost surely, 2^87772572571 is an apocalyptic number.

87772572571 is a deficient number, since it is larger than the sum of its proper divisors (1).

87772572571 is an equidigital number, since it uses as much as digits as its factorization.

87772572571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13445600, while the sum is 58.

The spelling of 87772572571 in words is "eighty-seven billion, seven hundred seventy-two million, five hundred seventy-two thousand, five hundred seventy-one".