15016949321 has 4 divisors (see below), whose sum is σ = 16382126544. Its totient is φ = 13651772100.

The previous prime is 15016949309. The next prime is 15016949327. The reversal of 15016949321 is 12394961051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15016949321 is a prime.

It is a super-2 number, since 2×15016949321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15016949327) 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 3 ways as a sum of consecutive naturals, for example, 682588595 + ... + 682588616.

It is an arithmetic number, because the mean of its divisors is an integer number (4095531636).

Almost surely, 2^15016949321 is an apocalyptic number.

15016949321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15016949321 is a deficient number, since it is larger than the sum of its proper divisors (1365177223).

15016949321 is a wasteful number, since it uses less digits than its factorization.

15016949321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365177222.

The product of its (nonzero) digits is 58320, while the sum is 41.

The spelling of 15016949321 in words is "fifteen billion, sixteen million, nine hundred forty-nine thousand, three hundred twenty-one".