19961087396 has 12 divisors (see below), whose sum is σ = 35423902080. Its totient is φ = 9839972520.

The previous prime is 19961087357. The next prime is 19961087453. The reversal of 19961087396 is 69378016991.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35142476 + ... + 35143043.

It is an arithmetic number, because the mean of its divisors is an integer number (2951991840).

Almost surely, 2^19961087396 is an apocalyptic number.

It is an amenable number.

19961087396 is a deficient number, since it is larger than the sum of its proper divisors (15462814684).

19961087396 is a wasteful number, since it uses less digits than its factorization.

19961087396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70285594 (or 70285592 counting only the distinct ones).

The product of its (nonzero) digits is 4408992, while the sum is 59.

The spelling of 19961087396 in words is "nineteen billion, nine hundred sixty-one million, eighty-seven thousand, three hundred ninety-six".