42644400346 has 16 divisors (see below), whose sum is σ = 67771838376. Its totient is φ = 20055361536.

The previous prime is 42644400311. The next prime is 42644400353. The reversal of 42644400346 is 64300444624.

It can be written as a sum of positive squares in 4 ways, for example, as 42018850225 + 625550121 = 204985^2 + 25011^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338391 + ... + 446986.

Almost surely, 2^42644400346 is an apocalyptic number.

42644400346 is a deficient number, since it is larger than the sum of its proper divisors (25127438030).

42644400346 is a wasteful number, since it uses less digits than its factorization.

42644400346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786993.

The product of its (nonzero) digits is 221184, while the sum is 37.

The spelling of 42644400346 in words is "forty-two billion, six hundred forty-four million, four hundred thousand, three hundred forty-six".