11621356351 has 4 divisors (see below), whose sum is σ = 12677843304. Its totient is φ = 10564869400.

The previous prime is 11621356301. The next prime is 11621356463. The reversal of 11621356351 is 15365312611.

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

It is a cyclic number.

It is not a de Polignac number, because 11621356351 - 2²⁷ = 11487138623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621356301) 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, 528243460 + ... + 528243481.

It is an arithmetic number, because the mean of its divisors is an integer number (3169460826).

Almost surely, 2^11621356351 is an apocalyptic number.

11621356351 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11621356351 is a deficient number, since it is larger than the sum of its proper divisors (1056486953).

11621356351 is a wasteful number, since it uses less digits than its factorization.

11621356351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056486952.

The product of its digits is 16200, while the sum is 34.

Adding to 11621356351 its reverse (15365312611), we get a palindrome (26986668962).

The spelling of 11621356351 in words is "eleven billion, six hundred twenty-one million, three hundred fifty-six thousand, three hundred fifty-one".