6456556445 has 4 divisors (see below), whose sum is σ = 7747867740. Its totient is φ = 5165245152.

The previous prime is 6456556411. The next prime is 6456556453. The reversal of 6456556445 is 5446556546.

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 1138792516 + 5317763929 = 33746^2 + 72923^2 .

It is a cyclic number.

It is not a de Polignac number, because 6456556445 - 2²² = 6452362141 is a prime.

It is a super-3 number, since 3×6456556445³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 6456556393 and 6456556402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645655640 + ... + 645655649.

It is an arithmetic number, because the mean of its divisors is an integer number (1936966935).

Almost surely, 2^6456556445 is an apocalyptic number.

It is an amenable number.

6456556445 is a deficient number, since it is larger than the sum of its proper divisors (1291311295).

6456556445 is a wasteful number, since it uses less digits than its factorization.

6456556445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291311294.

The product of its digits is 8640000, while the sum is 50.

The square root of 6456556445 is about 80352.7002968786. The cubic root of 6456556445 is about 1862.0884974108.

The spelling of 6456556445 in words is "six billion, four hundred fifty-six million, five hundred fifty-six thousand, four hundred forty-five".