19508966972 has 36 divisors (see below), whose sum is σ = 37813131048. Its totient is φ = 8799991200.

The previous prime is 19508966929. The next prime is 19508966977. The reversal of 19508966972 is 27966980591.

It is a super-3 number, since 3×19508966972³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19508966977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90443 + ... + 217250.

Almost surely, 2^19508966972 is an apocalyptic number.

It is an amenable number.

19508966972 is a deficient number, since it is larger than the sum of its proper divisors (18304164076).

19508966972 is a wasteful number, since it uses less digits than its factorization.

19508966972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307850 (or 307837 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 19508966972 in words is "nineteen billion, five hundred eight million, nine hundred sixty-six thousand, nine hundred seventy-two".