15387094923947 has 8 divisors (see below), whose sum is σ = 15422727319056. Its totient is φ = 15351499437472.

The previous prime is 15387094923943. The next prime is 15387094923971. The reversal of 15387094923947 is 74932949078351.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15387094923947 - 2² = 15387094923943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15387094923943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8392313 + ... + 10060074.

It is an arithmetic number, because the mean of its divisors is an integer number (1927840914882).

Almost surely, 2^{15387094923947} is an apocalyptic number.

15387094923947 is a deficient number, since it is larger than the sum of its proper divisors (35632395109).

15387094923947 is a wasteful number, since it uses less digits than its factorization.

15387094923947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18454317.

The product of its (nonzero) digits is 411505920, while the sum is 71.

The spelling of 15387094923947 in words is "fifteen trillion, three hundred eighty-seven billion, ninety-four million, nine hundred twenty-three thousand, nine hundred forty-seven".