11990601970533 has 28 divisors (see below), whose sum is σ = 17980580228928. Its totient is φ = 7992444600360.

The previous prime is 11990601970489. The next prime is 11990601970547. The reversal of 11990601970533 is 33507910609911.

11990601970533 is a `hidden beast` number, since 1 + 1 + 9 + 90 + 6 + 0 + 19 + 7 + 0 + 533 = 666.

It is not a de Polignac number, because 11990601970533 - 2¹⁰ = 11990601969509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11990601970533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11990601970583) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3203716 + ... + 5851922.

Almost surely, 2^{11990601970533} is an apocalyptic number.

It is an amenable number.

11990601970533 is a deficient number, since it is larger than the sum of its proper divisors (5989978258395).

11990601970533 is an frugal number, since it uses more digits than its factorization.

11990601970533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654436 (or 2654421 counting only the distinct ones).

The product of its (nonzero) digits is 1377810, while the sum is 54.

The spelling of 11990601970533 in words is "eleven trillion, nine hundred ninety billion, six hundred one million, nine hundred seventy thousand, five hundred thirty-three".