83870505372 has 24 divisors (see below), whose sum is σ = 196711829776. Its totient is φ = 27811980288.

The previous prime is 83870505349. The next prime is 83870505373. The reversal of 83870505372 is 27350507838.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83870505373) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18104443 + ... + 18109074.

Almost surely, 2^83870505372 is an apocalyptic number.

It is an amenable number.

83870505372 is an abundant number, since it is smaller than the sum of its proper divisors (112841324404).

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

83870505372 is a wasteful number, since it uses less digits than its factorization.

83870505372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36213717 (or 36213715 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 83870505372 in words is "eighty-three billion, eight hundred seventy million, five hundred five thousand, three hundred seventy-two".