15722373427 has 4 divisors (see below), whose sum is σ = 15723567720. Its totient is φ = 15721179136.

The previous prime is 15722373421. The next prime is 15722373431. The reversal of 15722373427 is 72437322751.

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: 72437322751 = 47 ⋅1541219633.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15722373427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15722373421) 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, 577177 + ... + 603802.

It is an arithmetic number, because the mean of its divisors is an integer number (3930891930).

Almost surely, 2^15722373427 is an apocalyptic number.

15722373427 is a deficient number, since it is larger than the sum of its proper divisors (1194293).

15722373427 is a wasteful number, since it uses less digits than its factorization.

15722373427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194292.

The product of its digits is 493920, while the sum is 43.

The spelling of 15722373427 in words is "fifteen billion, seven hundred twenty-two million, three hundred seventy-three thousand, four hundred twenty-seven".