15000379869 has 4 divisors (see below), whose sum is σ = 20000506496. Its totient is φ = 10000253244.

The previous prime is 15000379861. The next prime is 15000379873. The reversal of 15000379869 is 96897300051.

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 not a de Polignac number, because 15000379869 - 2³ = 15000379861 is a prime.

It is a super-2 number, since 2×15000379869² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15000379861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2500063309 + ... + 2500063314.

It is an arithmetic number, because the mean of its divisors is an integer number (5000126624).

Almost surely, 2^15000379869 is an apocalyptic number.

It is an amenable number.

15000379869 is a deficient number, since it is larger than the sum of its proper divisors (5000126627).

15000379869 is an equidigital number, since it uses as much as digits as its factorization.

15000379869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000126626.

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 15000379869 in words is "fifteen billion, three hundred seventy-nine thousand, eight hundred sixty-nine".