346643636642 has 4 divisors (see below), whose sum is σ = 519965454966. Its totient is φ = 173321818320.

The previous prime is 346643636627. The next prime is 346643636657. The reversal of 346643636642 is 246636346643.

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 (346643636627) and next prime (346643636657).

It can be written as a sum of positive squares in only one way, i.e., 175519940401 + 171123696241 = 418951^2 + 413671^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86660909159 + ... + 86660909162.

Almost surely, 2^346643636642 is an apocalyptic number.

346643636642 is a deficient number, since it is larger than the sum of its proper divisors (173321818324).

346643636642 is a wasteful number, since it uses less digits than its factorization.

346643636642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173321818323.

The product of its digits is 26873856, while the sum is 53.

The spelling of 346643636642 in words is "three hundred forty-six billion, six hundred forty-three million, six hundred thirty-six thousand, six hundred forty-two".