19927399610 has 16 divisors (see below), whose sum is σ = 35875526400. Its totient is φ = 7969580496.

The previous prime is 19927399607. The next prime is 19927399627. The reversal of 19927399610 is 1699372991.

19927399610 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110690 + ... + 228269.

It is an arithmetic number, because the mean of its divisors is an integer number (2242220400).

Almost surely, 2^19927399610 is an apocalyptic number.

19927399610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19927399610 is a deficient number, since it is larger than the sum of its proper divisors (15948126790).

19927399610 is a wasteful number, since it uses less digits than its factorization.

19927399610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344845.

The product of its (nonzero) digits is 1653372, while the sum is 56.

The spelling of 19927399610 in words is "nineteen billion, nine hundred twenty-seven million, three hundred ninety-nine thousand, six hundred ten".