87694784712 has 24 divisors (see below), whose sum is σ = 237506708790. Its totient is φ = 29231594880.

The previous prime is 87694784711. The next prime is 87694784747. The reversal of 87694784712 is 21748749678.

87694784712 is a `hidden beast` number, since 8 + 7 + 6 + 94 + 78 + 471 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 48962183076 + 38732601636 = 221274^2 + 196806^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 87694784712.

It is not an unprimeable number, because it can be changed into a prime (87694784711) 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, 608991489 + ... + 608991632.

Almost surely, 2^87694784712 is an apocalyptic number.

It is an amenable number.

87694784712 is an abundant number, since it is smaller than the sum of its proper divisors (149811924078).

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

87694784712 is a wasteful number, since it uses less digits than its factorization.

87694784712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217983133 (or 1217983126 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 63.

The spelling of 87694784712 in words is "eighty-seven billion, six hundred ninety-four million, seven hundred eighty-four thousand, seven hundred twelve".