1999301356860 has 96 divisors (see below), whose sum is σ = 5691087343872. Its totient is φ = 524327846400.

The previous prime is 1999301356849. The next prime is 1999301356903. The reversal of 1999301356860 is 686531039991.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 1999301356794 and 1999301356803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 862135 + ... + 2177585.

It is an arithmetic number, because the mean of its divisors is an integer number (59282159832).

Almost surely, 2^{1999301356860} is an apocalyptic number.

1999301356860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1999301356860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2845543671936).

1999301356860 is an abundant number, since it is smaller than the sum of its proper divisors (3691785987012).

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

1999301356860 is a wasteful number, since it uses less digits than its factorization.

1999301356860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315883 (or 1315881 counting only the distinct ones).

The product of its (nonzero) digits is 9447840, while the sum is 60.

The spelling of 1999301356860 in words is "one trillion, nine hundred ninety-nine billion, three hundred one million, three hundred fifty-six thousand, eight hundred sixty".