56001665005 has 16 divisors (see below), whose sum is σ = 78950600064. Its totient is φ = 37595522880.

The previous prime is 56001664993. The next prime is 56001665021. The reversal of 56001665005 is 50056610065.

It is not a de Polignac number, because 56001665005 - 2⁵ = 56001664973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39161289 + ... + 39162718.

It is an arithmetic number, because the mean of its divisors is an integer number (4934412504).

Almost surely, 2^56001665005 is an apocalyptic number.

56001665005 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56001665005 is a deficient number, since it is larger than the sum of its proper divisors (22948935059).

56001665005 is a wasteful number, since it uses less digits than its factorization.

56001665005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78324036.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 56001665005 in words is "fifty-six billion, one million, six hundred sixty-five thousand, five".