15380533474 has 4 divisors (see below), whose sum is σ = 23070800214. Its totient is φ = 7690266736.

The previous prime is 15380533457. The next prime is 15380533489. The reversal of 15380533474 is 47433508351.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13711239025 + 1669294449 = 117095^2 + 40857^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 15380533474.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3845133367 + ... + 3845133370.

Almost surely, 2^15380533474 is an apocalyptic number.

15380533474 is a deficient number, since it is larger than the sum of its proper divisors (7690266740).

15380533474 is an equidigital number, since it uses as much as digits as its factorization.

15380533474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7690266739.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 15380533474 in words is "fifteen billion, three hundred eighty million, five hundred thirty-three thousand, four hundred seventy-four".