19942934902912 has 192 divisors, whose sum is σ = 46644649084440. Its totient is φ = 8468175421440.

The previous prime is 19942934902871. The next prime is 19942934902931. The reversal of 19942934902912 is 21920943924991.

It can be written as a sum of positive squares in 4 ways, for example, as 19794882332736 + 148052570176 = 4449144^2 + 384776^2 .

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (64).

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, 297742258 + ... + 297809230.

Almost surely, 2^{19942934902912} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19942934902912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23322324542220).

19942934902912 is an abundant number, since it is smaller than the sum of its proper divisors (26701714181528).

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

19942934902912 is a wasteful number, since it uses less digits than its factorization.

19942934902912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67439 (or 67420 counting only the distinct ones).

The product of its (nonzero) digits is 22674816, while the sum is 64.

The spelling of 19942934902912 in words is "nineteen trillion, nine hundred forty-two billion, nine hundred thirty-four million, nine hundred two thousand, nine hundred twelve".