87894237387 has 32 divisors (see below), whose sum is σ = 128960916480. Its totient is φ = 52805636000.

The previous prime is 87894237371. The next prime is 87894237391. The reversal of 87894237387 is 78373249878.

It is a cyclic number.

It is not a de Polignac number, because 87894237387 - 2⁴ = 87894237371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87894237307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4187164 + ... + 4208102.

It is an arithmetic number, because the mean of its divisors is an integer number (4030028640).

Almost surely, 2^87894237387 is an apocalyptic number.

87894237387 is a deficient number, since it is larger than the sum of its proper divisors (41066679093).

87894237387 is a wasteful number, since it uses less digits than its factorization.

87894237387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22055.

The product of its digits is 113799168, while the sum is 66.

The spelling of 87894237387 in words is "eighty-seven billion, eight hundred ninety-four million, two hundred thirty-seven thousand, three hundred eighty-seven".