11421400051 has 4 divisors (see below), whose sum is σ = 11424150400. Its totient is φ = 11418649704.

The previous prime is 11421400031. The next prime is 11421400063. The reversal of 11421400051 is 15000412411.

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-11421400051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11421400021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1368936 + ... + 1377253.

It is an arithmetic number, because the mean of its divisors is an integer number (2856037600).

Almost surely, 2^11421400051 is an apocalyptic number.

11421400051 is a deficient number, since it is larger than the sum of its proper divisors (2750349).

11421400051 is an equidigital number, since it uses as much as digits as its factorization.

11421400051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2750348.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 11421400051 its reverse (15000412411), we get a palindrome (26421812462).

The spelling of 11421400051 in words is "eleven billion, four hundred twenty-one million, four hundred thousand, fifty-one".