202041781402 has 8 divisors (see below), whose sum is σ = 303135588756. Its totient is φ = 100996585152.

The previous prime is 202041781369. The next prime is 202041781421. The reversal of 202041781402 is 204187140202.

It can be written as a sum of positive squares in 2 ways, for example, as 201952270881 + 89510521 = 449391^2 + 9461^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12142383 + ... + 12159010.

Almost surely, 2^202041781402 is an apocalyptic number.

202041781402 is a deficient number, since it is larger than the sum of its proper divisors (101093807354).

202041781402 is a wasteful number, since it uses less digits than its factorization.

202041781402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24305552.

The product of its (nonzero) digits is 7168, while the sum is 31.

The spelling of 202041781402 in words is "two hundred two billion, forty-one million, seven hundred eighty-one thousand, four hundred two".