11861902861946 has 8 divisors (see below), whose sum is σ = 17792894700084. Its totient is φ = 5930937961920.

The previous prime is 11861902861873. The next prime is 11861902861961. The reversal of 11861902861946 is 64916820916811.

It can be written as a sum of positive squares in 2 ways, for example, as 10290051411721 + 1571851450225 = 3207811^2 + 1253735^2 .

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, 5595125 + ... + 7418168.

Almost surely, 2^{11861902861946} is an apocalyptic number.

11861902861946 is a deficient number, since it is larger than the sum of its proper divisors (5930991838138).

11861902861946 is a wasteful number, since it uses less digits than its factorization.

11861902861946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13469056.

The product of its (nonzero) digits is 8957952, while the sum is 62.

The spelling of 11861902861946 in words is "eleven trillion, eight hundred sixty-one billion, nine hundred two million, eight hundred sixty-one thousand, nine hundred forty-six".