56155711005 has 48 divisors (see below), whose sum is σ = 98631000000. Its totient is φ = 29552802048.

The previous prime is 56155710991. The next prime is 56155711013. The reversal of 56155711005 is 50011755165.

It is a happy number.

It is not a de Polignac number, because 56155711005 - 2¹¹ = 56155708957 is a prime.

It is a super-2 number, since 2×56155711005² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1984446 + ... + 2012544.

It is an arithmetic number, because the mean of its divisors is an integer number (2054812500).

Almost surely, 2^56155711005 is an apocalyptic number.

It is an amenable number.

56155711005 is a deficient number, since it is larger than the sum of its proper divisors (42475288995).

56155711005 is a wasteful number, since it uses less digits than its factorization.

56155711005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28698 (or 28695 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 36.

The spelling of 56155711005 in words is "fifty-six billion, one hundred fifty-five million, seven hundred eleven thousand, five".