56905791019 has 16 divisors (see below), whose sum is σ = 71050219776. Its totient is φ = 44277962400.

The previous prime is 56905791001. The next prime is 56905791037. The reversal of 56905791019 is 91019750965.

It is an interprime number because it is at equal distance from previous prime (56905791001) and next prime (56905791037).

It is not a de Polignac number, because 56905791019 - 2⁷ = 56905790891 is a prime.

It is a super-2 number, since 2×56905791019² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56905791119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481552 + ... + 587965.

It is an arithmetic number, because the mean of its divisors is an integer number (4440638736).

Almost surely, 2^56905791019 is an apocalyptic number.

56905791019 is a deficient number, since it is larger than the sum of its proper divisors (14144428757).

56905791019 is a wasteful number, since it uses less digits than its factorization.

56905791019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070226.

The product of its (nonzero) digits is 765450, while the sum is 52.

The spelling of 56905791019 in words is "fifty-six billion, nine hundred five million, seven hundred ninety-one thousand, nineteen".