10290857987 has 4 divisors (see below), whose sum is σ = 10292806056. Its totient is φ = 10288909920.

The previous prime is 10290857981. The next prime is 10290857999. The reversal of 10290857987 is 78975809201.

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

It is a cyclic number.

It is not a de Polignac number, because 10290857987 - 2⁴ = 10290857971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10290857981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 966089 + ... + 976682.

It is an arithmetic number, because the mean of its divisors is an integer number (2573201514).

Almost surely, 2^10290857987 is an apocalyptic number.

10290857987 is a deficient number, since it is larger than the sum of its proper divisors (1948069).

10290857987 is an equidigital number, since it uses as much as digits as its factorization.

10290857987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948068.

The product of its (nonzero) digits is 2540160, while the sum is 56.

The spelling of 10290857987 in words is "ten billion, two hundred ninety million, eight hundred fifty-seven thousand, nine hundred eighty-seven".