19674964563940 has 72 divisors (see below), whose sum is σ = 48877757147520. Its totient is φ = 6631368182208.

The previous prime is 19674964563901. The next prime is 19674964563959. The reversal of 19674964563940 is 4936546947691.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170081964 + ... + 170197603.

It is an arithmetic number, because the mean of its divisors is an integer number (678857738160).

Almost surely, 2^{19674964563940} is an apocalyptic number.

19674964563940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19674964563940 is an abundant number, since it is smaller than the sum of its proper divisors (29202792583580).

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

19674964563940 is a wasteful number, since it uses less digits than its factorization.

19674964563940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340279649 (or 340279640 counting only the distinct ones).

The product of its (nonzero) digits is 1058158080, while the sum is 73.

The spelling of 19674964563940 in words is "nineteen trillion, six hundred seventy-four billion, nine hundred sixty-four million, five hundred sixty-three thousand, nine hundred forty".