19976170545 has 12 divisors (see below), whose sum is σ = 34625362356. Its totient is φ = 10653957600.

The previous prime is 19976170493. The next prime is 19976170547. The reversal of 19976170545 is 54507167991.

19976170545 is a `hidden beast` number, since 1 + 9 + 97 + 6 + 1 + 7 + 0 + 545 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13818472704 + 6157697841 = 117552^2 + 78471^2 .

It is not a de Polignac number, because 19976170545 - 2⁹ = 19976170033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19976170491 and 19976170500.

It is not an unprimeable number, because it can be changed into a prime (19976170547) 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, 221957406 + ... + 221957495.

It is an arithmetic number, because the mean of its divisors is an integer number (2885446863).

Almost surely, 2^19976170545 is an apocalyptic number.

19976170545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19976170545 is a deficient number, since it is larger than the sum of its proper divisors (14649191811).

19976170545 is a wasteful number, since it uses less digits than its factorization.

19976170545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443914912 (or 443914909 counting only the distinct ones).

The product of its (nonzero) digits is 2381400, while the sum is 54.

The spelling of 19976170545 in words is "nineteen billion, nine hundred seventy-six million, one hundred seventy thousand, five hundred forty-five".