15485942491 has 8 divisors (see below), whose sum is σ = 15527116800. Its totient is φ = 15444793320.

The previous prime is 15485942453. The next prime is 15485942501. The reversal of 15485942491 is 19424958451.

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 15485942491 - 2⁹ = 15485941979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15485945491) 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 7 ways as a sum of consecutive naturals, for example, 2202780 + ... + 2209798.

It is an arithmetic number, because the mean of its divisors is an integer number (1940889600).

Almost surely, 2^15485942491 is an apocalyptic number.

15485942491 is a deficient number, since it is larger than the sum of its proper divisors (41174309).

15485942491 is an equidigital number, since it uses as much as digits as its factorization.

15485942491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12569.

The product of its digits is 2073600, while the sum is 52.

The spelling of 15485942491 in words is "fifteen billion, four hundred eighty-five million, nine hundred forty-two thousand, four hundred ninety-one".