19969502712 has 64 divisors (see below), whose sum is σ = 50394389760. Its totient is φ = 6593932800.

The previous prime is 19969502711. The next prime is 19969502713. The reversal of 19969502712 is 21720596991.

It is an interprime number because it is at equal distance from previous prime (19969502711) and next prime (19969502713).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19969502711) 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, 1859037 + ... + 1869747.

It is an arithmetic number, because the mean of its divisors is an integer number (787412340).

Almost surely, 2^19969502712 is an apocalyptic number.

19969502712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19969502712 is an abundant number, since it is smaller than the sum of its proper divisors (30424887048).

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

19969502712 is a wasteful number, since it uses less digits than its factorization.

19969502712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11444 (or 11440 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 51.

The spelling of 19969502712 in words is "nineteen billion, nine hundred sixty-nine million, five hundred two thousand, seven hundred twelve".