1056465216454 has 4 divisors (see below), whose sum is σ = 1584697824684. Its totient is φ = 528232608226.

The previous prime is 1056465216397. The next prime is 1056465216467. The reversal of 1056465216454 is 4546125646501.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1056465216454² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1056465216398 and 1056465216407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264116304112 + ... + 264116304115.

It is an arithmetic number, because the mean of its divisors is an integer number (396174456171).

Almost surely, 2^{1056465216454} is an apocalyptic number.

1056465216454 is a deficient number, since it is larger than the sum of its proper divisors (528232608230).

1056465216454 is an equidigital number, since it uses as much as digits as its factorization.

1056465216454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528232608229.

The product of its (nonzero) digits is 3456000, while the sum is 49.

The spelling of 1056465216454 in words is "one trillion, fifty-six billion, four hundred sixty-five million, two hundred sixteen thousand, four hundred fifty-four".