11898388765 has 8 divisors (see below), whose sum is σ = 14411507040. Its totient is φ = 9429750672.

The previous prime is 11898388759. The next prime is 11898388787. The reversal of 11898388765 is 56788389811.

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 11898388765 - 2⁷ = 11898388637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11898388697 and 11898388706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11119455 + ... + 11120524.

It is an arithmetic number, because the mean of its divisors is an integer number (1801438380).

Almost surely, 2^11898388765 is an apocalyptic number.

It is an amenable number.

11898388765 is a deficient number, since it is larger than the sum of its proper divisors (2513118275).

11898388765 is a wasteful number, since it uses less digits than its factorization.

11898388765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22240091.

The product of its digits is 23224320, while the sum is 64.

The spelling of 11898388765 in words is "eleven billion, eight hundred ninety-eight million, three hundred eighty-eight thousand, seven hundred sixty-five".