19914027660 has 48 divisors (see below), whose sum is σ = 61954754400. Its totient is φ = 5310407232.

The previous prime is 19914027649. The next prime is 19914027667. The reversal of 19914027660 is 6672041991.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (19914027667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18438375 + ... + 18439454.

It is an arithmetic number, because the mean of its divisors is an integer number (1290724050).

Almost surely, 2^19914027660 is an apocalyptic number.

19914027660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19914027660 is an abundant number, since it is smaller than the sum of its proper divisors (42040726740).

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

19914027660 is a wasteful number, since it uses less digits than its factorization.

19914027660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36877847 (or 36877839 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 19914027660 in words is "nineteen billion, nine hundred fourteen million, twenty-seven thousand, six hundred sixty".