19650004696986 has 64 divisors (see below), whose sum is σ = 39913954657920. Its totient is φ = 6448248668160.

The previous prime is 19650004696951. The next prime is 19650004697021. The reversal of 19650004696986 is 68969640005691.

It is an interprime number because it is at equal distance from previous prime (19650004696951) and next prime (19650004697021).

It is a super-2 number, since 2×19650004696986² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19650004696986.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 503297626 + ... + 503336666.

It is an arithmetic number, because the mean of its divisors is an integer number (623655541530).

Almost surely, 2^{19650004696986} is an apocalyptic number.

19650004696986 is an abundant number, since it is smaller than the sum of its proper divisors (20263949960934).

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

19650004696986 is a wasteful number, since it uses less digits than its factorization.

19650004696986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42671.

The product of its (nonzero) digits is 151165440, while the sum is 69.

The spelling of 19650004696986 in words is "nineteen trillion, six hundred fifty billion, four million, six hundred ninety-six thousand, nine hundred eighty-six".