19912964603442 has 32 divisors (see below), whose sum is σ = 42252465290112. Its totient is φ = 6234784675584.

The previous prime is 19912964603423. The next prime is 19912964603489. The reversal of 19912964603442 is 24430646921991.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194009473 + ... + 194112084.

It is an arithmetic number, because the mean of its divisors is an integer number (1320389540316).

Almost surely, 2^{19912964603442} is an apocalyptic number.

19912964603442 is an abundant number, since it is smaller than the sum of its proper divisors (22339500686670).

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

19912964603442 is a wasteful number, since it uses less digits than its factorization.

19912964603442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388122082.

The product of its (nonzero) digits is 20155392, while the sum is 60.

The spelling of 19912964603442 in words is "nineteen trillion, nine hundred twelve billion, nine hundred sixty-four million, six hundred three thousand, four hundred forty-two".