87711015894 has 12 divisors (see below), whose sum is σ = 175423482684. Its totient is φ = 29236763484.

The previous prime is 87711015893. The next prime is 87711015901. The reversal of 87711015894 is 49851011778.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87711015893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 664989 + ... + 785895.

It is an arithmetic number, because the mean of its divisors is an integer number (14618623557).

Almost surely, 2^87711015894 is an apocalyptic number.

87711015894 is an abundant number, since it is smaller than the sum of its proper divisors (87712466790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87711015894 is an frugal number, since it uses more digits than its factorization.

87711015894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241819 (or 120912 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 51.

The spelling of 87711015894 in words is "eighty-seven billion, seven hundred eleven million, fifteen thousand, eight hundred ninety-four".