15730078643 has 4 divisors (see below), whose sum is σ = 15730768800. Its totient is φ = 15729388488.

The previous prime is 15730078633. The next prime is 15730078681. The reversal of 15730078643 is 34687003751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34687003751 = 787 ⋅44074973.

It is a cyclic number.

It is not a de Polignac number, because 15730078643 - 2¹⁶ = 15730013107 is a prime.

It is a super-2 number, since 2×15730078643² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15730078594 and 15730078603.

It is not an unprimeable number, because it can be changed into a prime (15730078633) 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, 309680 + ... + 356877.

It is an arithmetic number, because the mean of its divisors is an integer number (3932692200).

Almost surely, 2^15730078643 is an apocalyptic number.

15730078643 is a deficient number, since it is larger than the sum of its proper divisors (690157).

15730078643 is an equidigital number, since it uses as much as digits as its factorization.

15730078643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690156.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 15730078643 in words is "fifteen billion, seven hundred thirty million, seventy-eight thousand, six hundred forty-three".