11871980189476 has 81 divisors (see below), whose sum is σ = 24104489935323. Its totient is φ = 5111715763440.

The previous prime is 11871980189437. The next prime is 11871980189543. The reversal of 11871980189476 is 67498108917811.

The square root of 11871980189476 is 3445574.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×11871980189476² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1440245811 + ... + 1440254053.

Almost surely, 2^{11871980189476} is an apocalyptic number.

11871980189476 is the 3445574-th square number.

It is an amenable number.

11871980189476 is an abundant number, since it is smaller than the sum of its proper divisors (12232509745847).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11871980189476 is an frugal number, since it uses more digits than its factorization.

11871980189476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16550 (or 8275 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 70.

The spelling of 11871980189476 in words is "eleven trillion, eight hundred seventy-one billion, nine hundred eighty million, one hundred eighty-nine thousand, four hundred seventy-six".