202645562243402 has 16 divisors (see below), whose sum is σ = 308227016496840. Its totient is φ = 99904076773632.

The previous prime is 202645562243387. The next prime is 202645562243471. The reversal of 202645562243402 is 204342265546202.

It can be written as a sum of positive squares in 4 ways, for example, as 201882069007441 + 763493235961 = 14208521^2 + 873781^2 .

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, 212864027 + ... + 213813902.

Almost surely, 2^{202645562243402} is an apocalyptic number.

202645562243402 is a deficient number, since it is larger than the sum of its proper divisors (105581454253438).

202645562243402 is a wasteful number, since it uses less digits than its factorization.

202645562243402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426681257.

The product of its (nonzero) digits is 5529600, while the sum is 47.

The spelling of 202645562243402 in words is "two hundred two trillion, six hundred forty-five billion, five hundred sixty-two million, two hundred forty-three thousand, four hundred two".