56347150081 has 4 divisors (see below), whose sum is σ = 56410964272. Its totient is φ = 56283335892.

The previous prime is 56347150049. The next prime is 56347150091. The reversal of 56347150081 is 18005174365.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18005174365 = 5 ⋅3601034873.

It is a cyclic number.

It is not a de Polignac number, because 56347150081 - 2⁵ = 56347150049 is a prime.

It is a super-2 number, since 2×56347150081² (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 (56347150091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31905771 + ... + 31907536.

It is an arithmetic number, because the mean of its divisors is an integer number (14102741068).

Almost surely, 2^56347150081 is an apocalyptic number.

It is an amenable number.

56347150081 is a deficient number, since it is larger than the sum of its proper divisors (63814191).

56347150081 is an equidigital number, since it uses as much as digits as its factorization.

56347150081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63814190.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 56347150081 in words is "fifty-six billion, three hundred forty-seven million, one hundred fifty thousand, eighty-one".