87391309570 has 8 divisors (see below), whose sum is σ = 157304357244. Its totient is φ = 34956523824.

The previous prime is 87391309541. The next prime is 87391309597. The reversal of 87391309570 is 7590319378.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 86469519249 + 921790321 = 294057^2 + 30361^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4369565469 + ... + 4369565488.

Almost surely, 2^87391309570 is an apocalyptic number.

87391309570 is a deficient number, since it is larger than the sum of its proper divisors (69913047674).

87391309570 is a wasteful number, since it uses less digits than its factorization.

87391309570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8739130964.

The product of its (nonzero) digits is 1428840, while the sum is 52.

The spelling of 87391309570 in words is "eighty-seven billion, three hundred ninety-one million, three hundred nine thousand, five hundred seventy".