56043147761 has 4 divisors (see below), whose sum is σ = 56046808692. Its totient is φ = 56039486832.

The previous prime is 56043147689. The next prime is 56043147781. The reversal of 56043147761 is 16774134065.

56043147761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13341405025 + 42701742736 = 115505^2 + 206644^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56043147761 is a prime.

It is a super-2 number, since 2×56043147761² (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 (56043147781) 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, 1807406 + ... + 1838151.

It is an arithmetic number, because the mean of its divisors is an integer number (14011702173).

Almost surely, 2^56043147761 is an apocalyptic number.

It is an amenable number.

56043147761 is a deficient number, since it is larger than the sum of its proper divisors (3660931).

56043147761 is a wasteful number, since it uses less digits than its factorization.

56043147761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660930.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 56043147761 in words is "fifty-six billion, forty-three million, one hundred forty-seven thousand, seven hundred sixty-one".