87305213251 has 8 divisors (see below), whose sum is σ = 91194937344. Its totient is φ = 83423309640.

The previous prime is 87305213239. The next prime is 87305213287. The reversal of 87305213251 is 15231250378.

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

It is not a de Polignac number, because 87305213251 - 2³¹ = 85157729603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87305213251.

It is not an unprimeable number, because it can be changed into a prime (87305213551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1932291 + ... + 1976956.

It is an arithmetic number, because the mean of its divisors is an integer number (11399367168).

Almost surely, 2^87305213251 is an apocalyptic number.

87305213251 is a deficient number, since it is larger than the sum of its proper divisors (3889724093).

87305213251 is a wasteful number, since it uses less digits than its factorization.

87305213251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3910241.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 87305213251 in words is "eighty-seven billion, three hundred five million, two hundred thirteen thousand, two hundred fifty-one".