1056661116157 has 4 divisors (see below), whose sum is σ = 1102602903840. Its totient is φ = 1010719328476.

The previous prime is 1056661116151. The next prime is 1056661116169. The reversal of 1056661116157 is 7516111666501.

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.

It is a cyclic number.

It is not a de Polignac number, because 1056661116157 - 2¹⁹ = 1056660591869 is a prime.

It is a super-2 number, since 2×1056661116157² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056661116151) 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, 22970893807 + ... + 22970893852.

It is an arithmetic number, because the mean of its divisors is an integer number (275650725960).

Almost surely, 2^{1056661116157} is an apocalyptic number.

It is an amenable number.

1056661116157 is a deficient number, since it is larger than the sum of its proper divisors (45941787683).

1056661116157 is an equidigital number, since it uses as much as digits as its factorization.

1056661116157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45941787682.

The product of its (nonzero) digits is 226800, while the sum is 46.

The spelling of 1056661116157 in words is "one trillion, fifty-six billion, six hundred sixty-one million, one hundred sixteen thousand, one hundred fifty-seven".