83638253280 has 96 divisors (see below), whose sum is σ = 263633577984. Its totient is φ = 22288882176.

The previous prime is 83638253261. The next prime is 83638253299. The reversal of 83638253280 is 8235283638.

It is an interprime number because it is at equal distance from previous prime (83638253261) and next prime (83638253299).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684177 + ... + 797103.

It is an arithmetic number, because the mean of its divisors is an integer number (2746183104).

Almost surely, 2^83638253280 is an apocalyptic number.

83638253280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83638253280 is an abundant number, since it is smaller than the sum of its proper divisors (179995324704).

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

83638253280 is a wasteful number, since it uses less digits than its factorization.

83638253280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114488 (or 114480 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 83638253280 in words is "eighty-three billion, six hundred thirty-eight million, two hundred fifty-three thousand, two hundred eighty".