11869236545 has 16 divisors (see below), whose sum is σ = 15141022848. Its totient is φ = 8901216000.

The previous prime is 11869236523. The next prime is 11869236553. The reversal of 11869236545 is 54563296811.

It is not a de Polignac number, because 11869236545 - 2¹² = 11869232449 is a prime.

It is a super-2 number, since 2×11869236545² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11869236493 and 11869236502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256829 + ... + 299498.

It is an arithmetic number, because the mean of its divisors is an integer number (946313928).

Almost surely, 2^11869236545 is an apocalyptic number.

It is an amenable number.

11869236545 is a deficient number, since it is larger than the sum of its proper divisors (3271786303).

11869236545 is a wasteful number, since it uses less digits than its factorization.

11869236545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556600.

The product of its digits is 1555200, while the sum is 50.

The spelling of 11869236545 in words is "eleven billion, eight hundred sixty-nine million, two hundred thirty-six thousand, five hundred forty-five".