201262784434 has 4 divisors (see below), whose sum is σ = 301894176654. Its totient is φ = 100631392216.

The previous prime is 201262784383. The next prime is 201262784473. The reversal of 201262784434 is 434487262102.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 100993662025 + 100269122409 = 317795^2 + 316653^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50315696107 + ... + 50315696110.

Almost surely, 2^201262784434 is an apocalyptic number.

201262784434 is a deficient number, since it is larger than the sum of its proper divisors (100631392220).

201262784434 is a wasteful number, since it uses less digits than its factorization.

201262784434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100631392219.

The product of its (nonzero) digits is 516096, while the sum is 43.

The spelling of 201262784434 in words is "two hundred one billion, two hundred sixty-two million, seven hundred eighty-four thousand, four hundred thirty-four".