87030013320457 has 4 divisors (see below), whose sum is σ = 87031335287556. Its totient is φ = 87028691353360.

The previous prime is 87030013320443. The next prime is 87030013320463. The reversal of 87030013320457 is 75402331003078.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28141210719241 + 58888802601216 = 5304829^2 + 7673904^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87030013320457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87030013320557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660884794 + ... + 661016467.

It is an arithmetic number, because the mean of its divisors is an integer number (21757833821889).

Almost surely, 2^{87030013320457} is an apocalyptic number.

It is an amenable number.

87030013320457 is a deficient number, since it is larger than the sum of its proper divisors (1321967099).

87030013320457 is a wasteful number, since it uses less digits than its factorization.

87030013320457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321967098.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 87030013320457 in words is "eighty-seven trillion, thirty billion, thirteen million, three hundred twenty thousand, four hundred fifty-seven".