11851422897956 has 6 divisors (see below), whose sum is σ = 20739990071430. Its totient is φ = 5925711448976.

The previous prime is 11851422897931. The next prime is 11851422897961. The reversal of 11851422897956 is 65979822415811.

It can be written as a sum of positive squares in only one way, i.e., 11849291598400 + 2131299556 = 3442280^2 + 46166^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1481427862241 + ... + 1481427862248.

It is an arithmetic number, because the mean of its divisors is an integer number (3456665011905).

Almost surely, 2^{11851422897956} is an apocalyptic number.

It is an amenable number.

11851422897956 is a deficient number, since it is larger than the sum of its proper divisors (8888567173474).

11851422897956 is a wasteful number, since it uses less digits than its factorization.

11851422897956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2962855724493 (or 2962855724491 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 68.

The spelling of 11851422897956 in words is "eleven trillion, eight hundred fifty-one billion, four hundred twenty-two million, eight hundred ninety-seven thousand, nine hundred fifty-six".