15380629821 has 12 divisors (see below), whose sum is σ = 22689156672. Its totient is φ = 10035587976.

The previous prime is 15380629801. The next prime is 15380629841. The reversal of 15380629821 is 12892608351.

15380629821 is a `hidden beast` number, since 1 + 538 + 0 + 6 + 2 + 98 + 21 = 666.

15380629821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15380629801) and next prime (15380629841).

It is not a de Polignac number, because 15380629821 - 2¹⁰ = 15380628797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15380629801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18179991 + ... + 18180836.

It is an arithmetic number, because the mean of its divisors is an integer number (1890763056).

Almost surely, 2^15380629821 is an apocalyptic number.

It is an amenable number.

15380629821 is a deficient number, since it is larger than the sum of its proper divisors (7308526851).

15380629821 is a wasteful number, since it uses less digits than its factorization.

15380629821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36360880 (or 36360877 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 15380629821 in words is "fifteen billion, three hundred eighty million, six hundred twenty-nine thousand, eight hundred twenty-one".