1056951865061 has 4 divisors (see below), whose sum is σ = 1056969213324. Its totient is φ = 1056934516800.

The previous prime is 1056951865031. The next prime is 1056951865093. The reversal of 1056951865061 is 1605681596501.

It is a happy number.

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 1013708662561 + 43243202500 = 1006831^2 + 207950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1056951865061 is a prime.

It is a super-2 number, since 2×1056951865061² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1056951864994 and 1056951865012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056951865001) 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, 8582420 + ... + 8704701.

It is an arithmetic number, because the mean of its divisors is an integer number (264242303331).

Almost surely, 2^{1056951865061} is an apocalyptic number.

It is an amenable number.

1056951865061 is a deficient number, since it is larger than the sum of its proper divisors (17348263).

1056951865061 is an equidigital number, since it uses as much as digits as its factorization.

1056951865061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17348262.

The product of its (nonzero) digits is 1944000, while the sum is 53.

The spelling of 1056951865061 in words is "one trillion, fifty-six billion, nine hundred fifty-one million, eight hundred sixty-five thousand, sixty-one".