11977268150761 has 3 divisors (see below), whose sum is σ = 11977271611581. Its totient is φ = 11977264689942.

The previous prime is 11977268150713. The next prime is 11977268150779. The reversal of 11977268150761 is 16705186277911.

It is a happy number.

The square root of 11977268150761 is 3460819.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 11977268150761 - 2²⁵ = 11977234596329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11977268150761.

It is not an unprimeable number, because it can be changed into a prime (11977268190761) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1730410 + ... + 5191228.

It is an arithmetic number, because the mean of its divisors is an integer number (3992423870527).

Almost surely, 2^{11977268150761} is an apocalyptic number.

11977268150761 is the 3460819-th square number.

11977268150761 is the 1730410-th centered octagonal number.

It is an amenable number.

11977268150761 is a deficient number, since it is larger than the sum of its proper divisors (3460820).

11977268150761 is an frugal number, since it uses more digits than its factorization.

11977268150761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6921638 (or 3460819 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 61.

The spelling of 11977268150761 in words is "eleven trillion, nine hundred seventy-seven billion, two hundred sixty-eight million, one hundred fifty thousand, seven hundred sixty-one".