19612389990732 has 288 divisors, whose sum is σ = 58595030011392. Its totient is φ = 4996366848000.

The previous prime is 19612389990619. The next prime is 19612389990733. The reversal of 19612389990732 is 23709998321691.

It is a super-2 number, since 2×19612389990732² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19612389990733) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 218816607 + ... + 218906217.

Almost surely, 2^{19612389990732} is an apocalyptic number.

19612389990732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19612389990732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29297515005696).

19612389990732 is an abundant number, since it is smaller than the sum of its proper divisors (38982640020660).

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

19612389990732 is a wasteful number, since it uses less digits than its factorization.

19612389990732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90061 (or 90048 counting only the distinct ones).

The product of its (nonzero) digits is 79361856, while the sum is 69.

The spelling of 19612389990732 in words is "nineteen trillion, six hundred twelve billion, three hundred eighty-nine million, nine hundred ninety thousand, seven hundred thirty-two".