19715451245 has 16 divisors (see below), whose sum is σ = 27187724928. Its totient is φ = 13444470720.

The previous prime is 19715451233. The next prime is 19715451247. The reversal of 19715451245 is 54215451791.

It is not a de Polignac number, because 19715451245 - 2⁴ = 19715451229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19715451196 and 19715451205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19715451247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1549739 + ... + 1562408.

It is an arithmetic number, because the mean of its divisors is an integer number (1699232808).

Almost surely, 2^19715451245 is an apocalyptic number.

It is an amenable number.

19715451245 is a deficient number, since it is larger than the sum of its proper divisors (7472273683).

19715451245 is a wasteful number, since it uses less digits than its factorization.

19715451245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3112340.

The product of its digits is 252000, while the sum is 44.

The spelling of 19715451245 in words is "nineteen billion, seven hundred fifteen million, four hundred fifty-one thousand, two hundred forty-five".