15440005051 has 4 divisors (see below), whose sum is σ = 15504071704. Its totient is φ = 15375938400.

The previous prime is 15440005027. The next prime is 15440005121. The reversal of 15440005051 is 15050004451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15050004451 = 12379 ⋅1215769.

It is a cyclic number.

It is not a de Polignac number, because 15440005051 - 2²⁷ = 15305787323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15440005151) 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, 32032965 + ... + 32033446.

It is an arithmetic number, because the mean of its divisors is an integer number (3876017926).

Almost surely, 2^15440005051 is an apocalyptic number.

15440005051 is a deficient number, since it is larger than the sum of its proper divisors (64066653).

15440005051 is an equidigital number, since it uses as much as digits as its factorization.

15440005051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64066652.

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 15440005051 in words is "fifteen billion, four hundred forty million, five thousand, fifty-one".