15505363982 has 4 divisors (see below), whose sum is σ = 23258045976. Its totient is φ = 7752681990.

The previous prime is 15505363931. The next prime is 15505363987. The reversal of 15505363982 is 28936350551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28936350551 = 47 ⋅615667033.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15505363987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3876340994 + ... + 3876340997.

It is an arithmetic number, because the mean of its divisors is an integer number (5814511494).

Almost surely, 2^15505363982 is an apocalyptic number.

15505363982 is a deficient number, since it is larger than the sum of its proper divisors (7752681994).

15505363982 is an equidigital number, since it uses as much as digits as its factorization.

15505363982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7752681993.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 15505363982 in words is "fifteen billion, five hundred five million, three hundred sixty-three thousand, nine hundred eighty-two".