19401642612684 has 72 divisors (see below), whose sum is σ = 49244899708368. Its totient is φ = 6440606760960.

The previous prime is 19401642612683. The next prime is 19401642612719. The reversal of 19401642612684 is 48621624610491.

19401642612684 is a `hidden beast` number, since 1 + 9 + 4 + 0 + 16 + 4 + 2 + 612 + 6 + 8 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 19401642612684.

It is not an unprimeable number, because it can be changed into a prime (19401642612683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41466124 + ... + 41931404.

It is an arithmetic number, because the mean of its divisors is an integer number (683956940394).

Almost surely, 2^{19401642612684} is an apocalyptic number.

It is an amenable number.

19401642612684 is an abundant number, since it is smaller than the sum of its proper divisors (29843257095684).

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

19401642612684 is a wasteful number, since it uses less digits than its factorization.

19401642612684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470055 (or 470050 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 19401642612684 in words is "nineteen trillion, four hundred one billion, six hundred forty-two million, six hundred twelve thousand, six hundred eighty-four".