56261016145 has 4 divisors (see below), whose sum is σ = 67513219380. Its totient is φ = 45008812912.

The previous prime is 56261016143. The next prime is 56261016169. The reversal of 56261016145 is 54161016265.

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 36998907201 + 19262108944 = 192351^2 + 138788^2 .

It is a cyclic number.

It is not a de Polignac number, because 56261016145 - 2¹ = 56261016143 is a prime.

It is a super-2 number, since 2×56261016145² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56261016143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5626101610 + ... + 5626101619.

It is an arithmetic number, because the mean of its divisors is an integer number (16878304845).

Almost surely, 2^56261016145 is an apocalyptic number.

It is an amenable number.

56261016145 is a deficient number, since it is larger than the sum of its proper divisors (11252203235).

56261016145 is a wasteful number, since it uses less digits than its factorization.

56261016145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11252203234.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 56261016145 in words is "fifty-six billion, two hundred sixty-one million, sixteen thousand, one hundred forty-five".