15040450993 has 4 divisors (see below), whose sum is σ = 15155263728. Its totient is φ = 14925638260.

The previous prime is 15040450969. The next prime is 15040451017. The reversal of 15040450993 is 39905404051.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39905404051 = 19843 ⋅2011057.

It is an interprime number because it is at equal distance from previous prime (15040450969) and next prime (15040451017).

It is a cyclic number.

It is not a de Polignac number, because 15040450993 - 2¹³ = 15040442801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15040450913) 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, 57406171 + ... + 57406432.

It is an arithmetic number, because the mean of its divisors is an integer number (3788815932).

Almost surely, 2^15040450993 is an apocalyptic number.

It is an amenable number.

15040450993 is a deficient number, since it is larger than the sum of its proper divisors (114812735).

15040450993 is a wasteful number, since it uses less digits than its factorization.

15040450993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114812734.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 15040450993 in words is "fifteen billion, forty million, four hundred fifty thousand, nine hundred ninety-three".