2045478747519 has 12 divisors (see below), whose sum is σ = 2965094937792. Its totient is φ = 1358799640800.

The previous prime is 2045478747511. The next prime is 2045478747551. The reversal of 2045478747519 is 9157478745402.

2045478747519 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 4 + 78 + 7 + 47 + 519 = 666.

It is not a de Polignac number, because 2045478747519 - 2³ = 2045478747511 is a prime.

It is a super-2 number, since 2×2045478747519² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045478747511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 404402127 + ... + 404407184.

It is an arithmetic number, because the mean of its divisors is an integer number (247091244816).

Almost surely, 2^{2045478747519} is an apocalyptic number.

2045478747519 is a deficient number, since it is larger than the sum of its proper divisors (919616190273).

2045478747519 is a wasteful number, since it uses less digits than its factorization.

2045478747519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808809598 (or 808809595 counting only the distinct ones).

The product of its (nonzero) digits is 79027200, while the sum is 63.

The spelling of 2045478747519 in words is "two trillion, forty-five billion, four hundred seventy-eight million, seven hundred forty-seven thousand, five hundred nineteen".