87691822013 has 8 divisors (see below), whose sum is σ = 88189754400. Its totient is φ = 87193979248.

The previous prime is 87691821967. The next prime is 87691822069. The reversal of 87691822013 is 31022819678.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 87691822013 - 2⁸ = 87691821757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87691822513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3472370 + ... + 3497532.

It is an arithmetic number, because the mean of its divisors is an integer number (11023719300).

Almost surely, 2^87691822013 is an apocalyptic number.

It is an amenable number.

87691822013 is a deficient number, since it is larger than the sum of its proper divisors (497932387).

87691822013 is a wasteful number, since it uses less digits than its factorization.

87691822013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44811.

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 87691822013 in words is "eighty-seven billion, six hundred ninety-one million, eight hundred twenty-two thousand, thirteen".