11423451051 has 12 divisors (see below), whose sum is σ = 17032816320. Its totient is φ = 7369968240.

The previous prime is 11423451049. The next prime is 11423451059. The reversal of 11423451051 is 15015432411.

11423451051 is a `hidden beast` number, since 1 + 142 + 3 + 4 + 510 + 5 + 1 = 666.

It is not a de Polignac number, because 11423451051 - 2¹ = 11423451049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11423451059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20471856 + ... + 20472413.

It is an arithmetic number, because the mean of its divisors is an integer number (1419401360).

Almost surely, 2^11423451051 is an apocalyptic number.

11423451051 is a deficient number, since it is larger than the sum of its proper divisors (5609365269).

11423451051 is a wasteful number, since it uses less digits than its factorization.

11423451051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40944306 (or 40944303 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 11423451051 its reverse (15015432411), we get a palindrome (26438883462).

The spelling of 11423451051 in words is "eleven billion, four hundred twenty-three million, four hundred fifty-one thousand, fifty-one".