19485977412 has 24 divisors (see below), whose sum is σ = 49600670112. Its totient is φ = 5904841600.

The previous prime is 19485977393. The next prime is 19485977417. The reversal of 19485977412 is 21477958491.

It is not an unprimeable number, because it can be changed into a prime (19485977417) 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, 73810389 + ... + 73810652.

It is an arithmetic number, because the mean of its divisors is an integer number (2066694588).

Almost surely, 2^19485977412 is an apocalyptic number.

19485977412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19485977412 is an abundant number, since it is smaller than the sum of its proper divisors (30114692700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19485977412 is a wasteful number, since it uses less digits than its factorization.

19485977412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147621059 (or 147621057 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 57.

The spelling of 19485977412 in words is "nineteen billion, four hundred eighty-five million, nine hundred seventy-seven thousand, four hundred twelve".