9873660780 has 48 divisors (see below), whose sum is σ = 30718057440. Its totient is φ = 2632976064.

The previous prime is 9873660773. The next prime is 9873660787. The reversal of 9873660780 is 870663789.

It is an interprime number because it is at equal distance from previous prime (9873660773) and next prime (9873660787).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (9873660787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9141739 + ... + 9142818.

It is an arithmetic number, because the mean of its divisors is an integer number (639959530).

Almost surely, 2^9873660780 is an apocalyptic number.

9873660780 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9873660780 is an abundant number, since it is smaller than the sum of its proper divisors (20844396660).

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

9873660780 is a wasteful number, since it uses less digits than its factorization.

9873660780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18284575 (or 18284567 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The square root of 9873660780 is about 99366.2959961777. The cubic root of 9873660780 is about 2145.3232238236.

The spelling of 9873660780 in words is "nine billion, eight hundred seventy-three million, six hundred sixty thousand, seven hundred eighty".