87427975053457 has 4 divisors (see below), whose sum is σ = 87431509949620. Its totient is φ = 87424440157296.

The previous prime is 87427975053437. The next prime is 87427975053509. The reversal of 87427975053457 is 75435057972478.

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 28777742231121 + 58650232822336 = 5364489^2 + 7658344^2 .

It is a cyclic number.

It is not a de Polignac number, because 87427975053457 - 2¹⁹ = 87427974529169 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 87427975053457.

It is not an unprimeable number, because it can be changed into a prime (87427975053437) 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, 1767410982 + ... + 1767460447.

It is an arithmetic number, because the mean of its divisors is an integer number (21857877487405).

Almost surely, 2^{87427975053457} is an apocalyptic number.

It is an amenable number.

87427975053457 is a deficient number, since it is larger than the sum of its proper divisors (3534896163).

87427975053457 is a wasteful number, since it uses less digits than its factorization.

87427975053457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534896162.

The product of its (nonzero) digits is 2074464000, while the sum is 73.

The spelling of 87427975053457 in words is "eighty-seven trillion, four hundred twenty-seven billion, nine hundred seventy-five million, fifty-three thousand, four hundred fifty-seven".