83231547520 has 64 divisors (see below), whose sum is σ = 217064111040. Its totient is φ = 30266014720.

The previous prime is 83231547493. The next prime is 83231547523. The reversal of 83231547520 is 2574513238.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (83231547523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5904292 + ... + 5918371.

It is an arithmetic number, because the mean of its divisors is an integer number (3391626735).

Almost surely, 2^83231547520 is an apocalyptic number.

83231547520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83231547520 is an abundant number, since it is smaller than the sum of its proper divisors (133832563520).

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

83231547520 is a wasteful number, since it uses less digits than its factorization.

83231547520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11822693 (or 11822681 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 83231547520 in words is "eighty-three billion, two hundred thirty-one million, five hundred forty-seven thousand, five hundred twenty".