11805342351 has 16 divisors (see below), whose sum is σ = 18181490688. Its totient is φ = 6733884800.

The previous prime is 11805342349. The next prime is 11805342413. The reversal of 11805342351 is 15324350811.

It is a cyclic number.

It is not a de Polignac number, because 11805342351 - 2¹ = 11805342349 is a prime.

It is a super-2 number, since 2×11805342351² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11805342151) 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, 10521135 + ... + 10522256.

It is an arithmetic number, because the mean of its divisors is an integer number (1136343168).

Almost surely, 2^11805342351 is an apocalyptic number.

11805342351 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11805342351 is a deficient number, since it is larger than the sum of its proper divisors (6376148337).

11805342351 is a wasteful number, since it uses less digits than its factorization.

11805342351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21043422.

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 11805342351 in words is "eleven billion, eight hundred five million, three hundred forty-two thousand, three hundred fifty-one".