83391704280 has 128 divisors (see below), whose sum is σ = 284436979200. Its totient is φ = 21720617856.

The previous prime is 83391704269. The next prime is 83391704321. The reversal of 83391704280 is 8240719338.

83391704280 is a `hidden beast` number, since 83 + 391 + 70 + 42 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 851404 + ... + 944283.

It is an arithmetic number, because the mean of its divisors is an integer number (2222163900).

Almost surely, 2^83391704280 is an apocalyptic number.

It is an amenable number.

83391704280 is an abundant number, since it is smaller than the sum of its proper divisors (201045274920).

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

83391704280 is a wasteful number, since it uses less digits than its factorization.

83391704280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795750 (or 1795740 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 83391704280 in words is "eighty-three billion, three hundred ninety-one million, seven hundred four thousand, two hundred eighty".