87772555387 has 16 divisors (see below), whose sum is σ = 96789369600. Its totient is φ = 78932809440.

The previous prime is 87772555373. The next prime is 87772555393. The reversal of 87772555387 is 78355527778.

It is a cyclic number.

It is not a de Polignac number, because 87772555387 - 2⁷ = 87772555259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87772555307) 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, 319914 + ... + 527152.

It is an arithmetic number, because the mean of its divisors is an integer number (6049335600).

Almost surely, 2^87772555387 is an apocalyptic number.

87772555387 is a deficient number, since it is larger than the sum of its proper divisors (9016814213).

87772555387 is a wasteful number, since it uses less digits than its factorization.

87772555387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207666.

The product of its digits is 115248000, while the sum is 64.

The spelling of 87772555387 in words is "eighty-seven billion, seven hundred seventy-two million, five hundred fifty-five thousand, three hundred eighty-seven".