83251221634 has 16 divisors (see below), whose sum is σ = 142720839936. Its totient is φ = 35677980000.

The previous prime is 83251221623. The next prime is 83251221637. The reversal of 83251221634 is 43612215238.

It is a junction number, because it is equal to n+sod(n) for n = 83251221593 and 83251221602.

It is not an unprimeable number, because it can be changed into a prime (83251221637) 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, 502759 + ... + 647509.

It is an arithmetic number, because the mean of its divisors is an integer number (8920052496).

Almost surely, 2^83251221634 is an apocalyptic number.

83251221634 is a deficient number, since it is larger than the sum of its proper divisors (59469618302).

83251221634 is a wasteful number, since it uses less digits than its factorization.

83251221634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185841.

The product of its digits is 69120, while the sum is 37.

The spelling of 83251221634 in words is "eighty-three billion, two hundred fifty-one million, two hundred twenty-one thousand, six hundred thirty-four".