15954453397 has 8 divisors (see below), whose sum is σ = 16638900992. Its totient is φ = 15280617600.

The previous prime is 15954453373. The next prime is 15954453433. The reversal of 15954453397 is 79335445951.

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 15954453397 - 2¹¹ = 15954451349 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 (15954453337) 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, 2649879 + ... + 2655892.

It is an arithmetic number, because the mean of its divisors is an integer number (2079862624).

Almost surely, 2^15954453397 is an apocalyptic number.

It is an amenable number.

15954453397 is a deficient number, since it is larger than the sum of its proper divisors (684447595).

15954453397 is an equidigital number, since it uses as much as digits as its factorization.

15954453397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5305899.

The product of its digits is 10206000, while the sum is 55.

The spelling of 15954453397 in words is "fifteen billion, nine hundred fifty-four million, four hundred fifty-three thousand, three hundred ninety-seven".