87311921279 has 8 divisors (see below), whose sum is σ = 95310483840. Its totient is φ = 79323544600.

The previous prime is 87311921269. The next prime is 87311921287. The reversal of 87311921279 is 97212911378.

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 87311921279 - 2²⁴ = 87295144063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87311921269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2528537 + ... + 2562834.

It is an arithmetic number, because the mean of its divisors is an integer number (11913810480).

Almost surely, 2^87311921279 is an apocalyptic number.

87311921279 is a deficient number, since it is larger than the sum of its proper divisors (7998562561).

87311921279 is a wasteful number, since it uses less digits than its factorization.

87311921279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5092941.

The product of its digits is 381024, while the sum is 50.

Subtracting 87311921279 from its reverse (97212911378), we obtain a palindrome (9900990099).

The spelling of 87311921279 in words is "eighty-seven billion, three hundred eleven million, nine hundred twenty-one thousand, two hundred seventy-nine".