10557994087 has 2 divisors, whose sum is σ = 10557994088. Its totient is φ = 10557994086.

The previous prime is 10557994063. The next prime is 10557994093. The reversal of 10557994087 is 78049975501.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (78049975501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10557994087 - 2¹⁵ = 10557961319 is a prime.

It is a super-2 number, since 2×10557994087² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10557994487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278997043 + 5278997044.

It is an arithmetic number, because the mean of its divisors is an integer number (5278997044).

Almost surely, 2^10557994087 is an apocalyptic number.

10557994087 is a deficient number, since it is larger than the sum of its proper divisors (1).

10557994087 is an equidigital number, since it uses as much as digits as its factorization.

10557994087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3175200, while the sum is 55.

The spelling of 10557994087 in words is "ten billion, five hundred fifty-seven million, nine hundred ninety-four thousand, eighty-seven".