83121372250512 has 80 divisors (see below), whose sum is σ = 224239871920128. Its totient is φ = 26481937426560.

The previous prime is 83121372250487. The next prime is 83121372250601. The reversal of 83121372250512 is 21505227312138.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27734728 + ... + 30585255.

Almost surely, 2^{83121372250512} is an apocalyptic number.

It is an amenable number.

83121372250512 is an abundant number, since it is smaller than the sum of its proper divisors (141118499669616).

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

83121372250512 is a wasteful number, since it uses less digits than its factorization.

83121372250512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58321308 (or 58321302 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 83121372250512 in words is "eighty-three trillion, one hundred twenty-one billion, three hundred seventy-two million, two hundred fifty thousand, five hundred twelve".