11505145351 has 8 divisors (see below), whose sum is σ = 13572890624. Its totient is φ = 9543438360.

The previous prime is 11505145343. The next prime is 11505145357. The reversal of 11505145351 is 15354150511.

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 11505145351 - 2³ = 11505145343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11505145357) 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, 26509335 + ... + 26509768.

It is an arithmetic number, because the mean of its divisors is an integer number (1696611328).

Almost surely, 2^11505145351 is an apocalyptic number.

11505145351 is a deficient number, since it is larger than the sum of its proper divisors (2067745273).

11505145351 is an equidigital number, since it uses as much as digits as its factorization.

11505145351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53019141.

The product of its (nonzero) digits is 7500, while the sum is 31.

Adding to 11505145351 its reverse (15354150511), we get a palindrome (26859295862).

The spelling of 11505145351 in words is "eleven billion, five hundred five million, one hundred forty-five thousand, three hundred fifty-one".