87938537251 has 8 divisors (see below), whose sum is σ = 90321088880. Its totient is φ = 85556292768.

The previous prime is 87938537213. The next prime is 87938537257. The reversal of 87938537251 is 15273583978.

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 87938537251 - 2¹⁹ = 87938012963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87938537257) 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, 578245 + ... + 714313.

It is an arithmetic number, because the mean of its divisors is an integer number (11290136110).

Almost surely, 2^87938537251 is an apocalyptic number.

87938537251 is a deficient number, since it is larger than the sum of its proper divisors (2382551629).

87938537251 is a wasteful number, since it uses less digits than its factorization.

87938537251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153573.

The product of its digits is 12700800, while the sum is 58.

The spelling of 87938537251 in words is "eighty-seven billion, nine hundred thirty-eight million, five hundred thirty-seven thousand, two hundred fifty-one".