15103971145 has 8 divisors (see below), whose sum is σ = 18128970504. Its totient is φ = 12080373504.

The previous prime is 15103971143. The next prime is 15103971151. The reversal of 15103971145 is 54117930151.

It can be written as a sum of positive squares in 4 ways, for example, as 1663742521 + 13440228624 = 40789^2 + 115932^2 .

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 15103971145 - 2¹ = 15103971143 is a prime.

It is a super-2 number, since 2×15103971145² (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 (15103971143) 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, 326574 + ... + 369943.

It is an arithmetic number, because the mean of its divisors is an integer number (2266121313).

Almost surely, 2^15103971145 is an apocalyptic number.

It is an amenable number.

15103971145 is a deficient number, since it is larger than the sum of its proper divisors (3024999359).

15103971145 is an equidigital number, since it uses as much as digits as its factorization.

15103971145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700859.

The product of its (nonzero) digits is 18900, while the sum is 37.

The spelling of 15103971145 in words is "fifteen billion, one hundred three million, nine hundred seventy-one thousand, one hundred forty-five".