12355711949 has 8 divisors (see below), whose sum is σ = 14129837568. Its totient is φ = 10583842320.

The previous prime is 12355711939. The next prime is 12355711961. The reversal of 12355711949 is 94911755321.

It is a happy number.

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 12355711949 - 2¹² = 12355707853 is a prime.

It is a super-2 number, since 2×12355711949² (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 (12355711939) 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, 552242 + ... + 574179.

It is an arithmetic number, because the mean of its divisors is an integer number (1766229696).

Almost surely, 2^12355711949 is an apocalyptic number.

It is an amenable number.

12355711949 is a deficient number, since it is larger than the sum of its proper divisors (1774125619).

12355711949 is a wasteful number, since it uses less digits than its factorization.

12355711949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127995.

The product of its digits is 340200, while the sum is 47.

The spelling of 12355711949 in words is "twelve billion, three hundred fifty-five million, seven hundred eleven thousand, nine hundred forty-nine".