6345356642 has 4 divisors (see below), whose sum is σ = 9518034966. Its totient is φ = 3172678320.

The previous prime is 6345356627. The next prime is 6345356657. The reversal of 6345356642 is 2466535436.

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

It is an interprime number because it is at equal distance from previous prime (6345356627) and next prime (6345356657).

It can be written as a sum of positive squares in only one way, i.e., 6208021681 + 137334961 = 78791^2 + 11719^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6345356593 and 6345356602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1586339159 + ... + 1586339162.

Almost surely, 2^6345356642 is an apocalyptic number.

6345356642 is a deficient number, since it is larger than the sum of its proper divisors (3172678324).

6345356642 is a wasteful number, since it uses less digits than its factorization.

6345356642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172678323.

The product of its digits is 1555200, while the sum is 44.

The square root of 6345356642 is about 79657.7469051190. The cubic root of 6345356642 is about 1851.3364233904.

The spelling of 6345356642 in words is "six billion, three hundred forty-five million, three hundred fifty-six thousand, six hundred forty-two".