15673881081 has 8 divisors (see below), whose sum is σ = 20922727680. Its totient is φ = 10437144272.

The previous prime is 15673881049. The next prime is 15673881101. The reversal of 15673881081 is 18018837651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15673881081 - 2⁵ = 15673881049 is a prime.

It is a super-2 number, since 2×15673881081² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15673881081.

It is not an unprimeable number, because it can be changed into a prime (15673881481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3024426 + ... + 3029603.

It is an arithmetic number, because the mean of its divisors is an integer number (2615340960).

Almost surely, 2^15673881081 is an apocalyptic number.

It is an amenable number.

15673881081 is a deficient number, since it is larger than the sum of its proper divisors (5248846599).

15673881081 is an equidigital number, since it uses as much as digits as its factorization.

15673881081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6054895.

The product of its (nonzero) digits is 322560, while the sum is 48.

The spelling of 15673881081 in words is "fifteen billion, six hundred seventy-three million, eight hundred eighty-one thousand, eighty-one".