11955782469 has 16 divisors (see below), whose sum is σ = 16496737920. Its totient is φ = 7692874560.

The previous prime is 11955782429. The next prime is 11955782473. The reversal of 11955782469 is 96428755911.

It is a happy number.

It is not a de Polignac number, because 11955782469 - 2¹⁶ = 11955716933 is a prime.

It is a super-2 number, since 2×11955782469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11955782429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230224 + ... + 277334.

It is an arithmetic number, because the mean of its divisors is an integer number (1031046120).

Almost surely, 2^11955782469 is an apocalyptic number.

It is an amenable number.

11955782469 is a deficient number, since it is larger than the sum of its proper divisors (4540955451).

11955782469 is a wasteful number, since it uses less digits than its factorization.

11955782469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50060.

The product of its digits is 5443200, while the sum is 57.

The spelling of 11955782469 in words is "eleven billion, nine hundred fifty-five million, seven hundred eighty-two thousand, four hundred sixty-nine".