1056616664537 has 4 divisors (see below), whose sum is σ = 1207561902336. Its totient is φ = 905671426740.

The previous prime is 1056616664533. The next prime is 1056616664561. The reversal of 1056616664537 is 7354666166501.

1056616664537 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, 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 1056616664537 - 2² = 1056616664533 is a prime.

It is a super-2 number, since 2×1056616664537² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056616664533) 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, 75472618889 + ... + 75472618902.

It is an arithmetic number, because the mean of its divisors is an integer number (301890475584).

Almost surely, 2^{1056616664537} is an apocalyptic number.

It is an amenable number.

1056616664537 is a deficient number, since it is larger than the sum of its proper divisors (150945237799).

1056616664537 is an equidigital number, since it uses as much as digits as its factorization.

1056616664537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150945237798.

The product of its (nonzero) digits is 16329600, while the sum is 56.

The spelling of 1056616664537 in words is "one trillion, fifty-six billion, six hundred sixteen million, six hundred sixty-four thousand, five hundred thirty-seven".