15730144397 has 4 divisors (see below), whose sum is σ = 17160157536. Its totient is φ = 14300131260.

The previous prime is 15730144393. The next prime is 15730144439. The reversal of 15730144397 is 79344103751.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79344103751 = 11 ⋅7213100341.

It is a cyclic number.

It is not a de Polignac number, because 15730144397 - 2² = 15730144393 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 (15730144393) 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, 715006553 + ... + 715006574.

It is an arithmetic number, because the mean of its divisors is an integer number (4290039384).

Almost surely, 2^15730144397 is an apocalyptic number.

It is an amenable number.

15730144397 is a deficient number, since it is larger than the sum of its proper divisors (1430013139).

15730144397 is a wasteful number, since it uses less digits than its factorization.

15730144397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430013138.

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 15730144397 in words is "fifteen billion, seven hundred thirty million, one hundred forty-four thousand, three hundred ninety-seven".