1056045436557 has 16 divisors (see below), whose sum is σ = 1440883929408. Its totient is φ = 687620384640.

The previous prime is 1056045436543. The next prime is 1056045436571. The reversal of 1056045436557 is 7556345406501.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1056045436543) and next prime (1056045436571).

It is not a de Polignac number, because 1056045436557 - 2⁴ = 1056045436541 is a prime.

It is a super-2 number, since 2×1056045436557² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056045436597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2288953 + ... + 2711345.

It is an arithmetic number, because the mean of its divisors is an integer number (90055245588).

Almost surely, 2^{1056045436557} is an apocalyptic number.

It is an amenable number.

1056045436557 is a deficient number, since it is larger than the sum of its proper divisors (384838492851).

1056045436557 is a wasteful number, since it uses less digits than its factorization.

1056045436557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441820.

The product of its (nonzero) digits is 7560000, while the sum is 51.

The spelling of 1056045436557 in words is "one trillion, fifty-six billion, forty-five million, four hundred thirty-six thousand, five hundred fifty-seven".