19585101420 has 36 divisors (see below), whose sum is σ = 59408141520. Its totient is φ = 5222693664.

The previous prime is 19585101407. The next prime is 19585101439. The reversal of 19585101420 is 2410158591.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54402880 + ... + 54403239.

Almost surely, 2^19585101420 is an apocalyptic number.

19585101420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19585101420 is an abundant number, since it is smaller than the sum of its proper divisors (39823040100).

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

19585101420 is a wasteful number, since it uses less digits than its factorization.

19585101420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108806134 (or 108806129 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The spelling of 19585101420 in words is "nineteen billion, five hundred eighty-five million, one hundred one thousand, four hundred twenty".