19402143660 has 72 divisors (see below), whose sum is σ = 58882824000. Its totient is φ = 5171298048.

The previous prime is 19402143641. The next prime is 19402143689. The reversal of 19402143660 is 6634120491.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 345216 + ... + 397464.

It is an arithmetic number, because the mean of its divisors is an integer number (817817000).

Almost surely, 2^19402143660 is an apocalyptic number.

19402143660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19402143660 is an abundant number, since it is smaller than the sum of its proper divisors (39480680340).

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

19402143660 is a wasteful number, since it uses less digits than its factorization.

19402143660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54327 (or 54322 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 19402143660 in words is "nineteen billion, four hundred two million, one hundred forty-three thousand, six hundred sixty".