87686194942 has 8 divisors (see below), whose sum is σ = 131588519832. Its totient is φ = 43823355000.

The previous prime is 87686194907. The next prime is 87686194949. The reversal of 87686194942 is 24949168678.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87686194949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9865684 + ... + 9874567.

It is an arithmetic number, because the mean of its divisors is an integer number (16448564979).

Almost surely, 2^87686194942 is an apocalyptic number.

87686194942 is a deficient number, since it is larger than the sum of its proper divisors (43902324890).

87686194942 is a wasteful number, since it uses less digits than its factorization.

87686194942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19742474.

The product of its digits is 41803776, while the sum is 64.

The spelling of 87686194942 in words is "eighty-seven billion, six hundred eighty-six million, one hundred ninety-four thousand, nine hundred forty-two".