19925453987712 has 192 divisors, whose sum is σ = 70569316577760. Its totient is φ = 5255064760320.

The previous prime is 19925453987693. The next prime is 19925453987783. The reversal of 19925453987712 is 21778935452991.

It is a happy number.

19925453987712 is a `hidden beast` number, since 1 + 9 + 9 + 2 + 5 + 4 + 539 + 8 + 77 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-3 number, since 3×19925453987712³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

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, 94930339 + ... + 95140002.

Almost surely, 2^{19925453987712} is an apocalyptic number.

19925453987712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19925453987712 is an abundant number, since it is smaller than the sum of its proper divisors (50643862590048).

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

19925453987712 is a wasteful number, since it uses less digits than its factorization.

19925453987712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190070381 (or 190070366 counting only the distinct ones).

The product of its digits is 342921600, while the sum is 72.

The spelling of 19925453987712 in words is "nineteen trillion, nine hundred twenty-five billion, four hundred fifty-three million, nine hundred eighty-seven thousand, seven hundred twelve".