11464051511 has 4 divisors (see below), whose sum is σ = 12506238024. Its totient is φ = 10421865000.

The previous prime is 11464051471. The next prime is 11464051553. The reversal of 11464051511 is 11515046411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11464051511 is a prime.

It is a super-2 number, since 2×11464051511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11464051411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521093240 + ... + 521093261.

It is an arithmetic number, because the mean of its divisors is an integer number (3126559506).

Almost surely, 2^11464051511 is an apocalyptic number.

11464051511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11464051511 is a deficient number, since it is larger than the sum of its proper divisors (1042186513).

11464051511 is a wasteful number, since it uses less digits than its factorization.

11464051511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042186512.

The product of its (nonzero) digits is 2400, while the sum is 29.

Adding to 11464051511 its reverse (11515046411), we get a palindrome (22979097922).

The spelling of 11464051511 in words is "eleven billion, four hundred sixty-four million, fifty-one thousand, five hundred eleven".