9671812780 has 48 divisors (see below), whose sum is σ = 23218445376. Its totient is φ = 3315179520.

The previous prime is 9671812769. The next prime is 9671812783. The reversal of 9671812780 is 872181769.

It is not an unprimeable number, because it can be changed into a prime (9671812783) 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, 755392 + ... + 768088.

It is an arithmetic number, because the mean of its divisors is an integer number (483717612).

Almost surely, 2^9671812780 is an apocalyptic number.

It is an amenable number.

9671812780 is an abundant number, since it is smaller than the sum of its proper divisors (13546632596).

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

9671812780 is a wasteful number, since it uses less digits than its factorization.

9671812780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18154 (or 18152 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 49.

The square root of 9671812780 is about 98345.3749802196. The cubic root of 9671812780 is about 2130.6034555759.

The spelling of 9671812780 in words is "nine billion, six hundred seventy-one million, eight hundred twelve thousand, seven hundred eighty".