83005780756 has 12 divisors (see below), whose sum is σ = 145321762068. Its totient is φ = 41485277312.

The previous prime is 83005780751. The next prime is 83005780763. The reversal of 83005780756 is 65708750038.

It can be written as a sum of positive squares in 2 ways, for example, as 27655690000 + 55350090756 = 166300^2 + 235266^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83005780751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4392661 + ... + 4411516.

It is an arithmetic number, because the mean of its divisors is an integer number (12110146839).

Almost surely, 2^83005780756 is an apocalyptic number.

It is an amenable number.

83005780756 is a deficient number, since it is larger than the sum of its proper divisors (62315981312).

83005780756 is a wasteful number, since it uses less digits than its factorization.

83005780756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8806538 (or 8806536 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 83005780756 in words is "eighty-three billion, five million, seven hundred eighty thousand, seven hundred fifty-six".