11773045811521 has 8 divisors (see below), whose sum is σ = 12179578366080. Its totient is φ = 11366550954192.

The previous prime is 11773045811519. The next prime is 11773045811551. The reversal of 11773045811521 is 12511854037711.

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

It is a cyclic number.

It is not a de Polignac number, because 11773045811521 - 2¹ = 11773045811519 is a prime.

It is a super-2 number, since 2×11773045811521² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11773045811551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8788185 + ... + 10038838.

It is an arithmetic number, because the mean of its divisors is an integer number (1522447295760).

Almost surely, 2^{11773045811521} is an apocalyptic number.

It is an amenable number.

11773045811521 is a deficient number, since it is larger than the sum of its proper divisors (406532554559).

11773045811521 is a wasteful number, since it uses less digits than its factorization.

11773045811521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18848615.

The product of its (nonzero) digits is 235200, while the sum is 46.

The spelling of 11773045811521 in words is "eleven trillion, seven hundred seventy-three billion, forty-five million, eight hundred eleven thousand, five hundred twenty-one".