83121327668446 has 4 divisors (see below), whose sum is σ = 124681991502672. Its totient is φ = 41560663834222.

The previous prime is 83121327668437. The next prime is 83121327668471. The reversal of 83121327668446 is 64486672312138.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×83121327668446² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20780331917110 + ... + 20780331917113.

It is an arithmetic number, because the mean of its divisors is an integer number (31170497875668).

Almost surely, 2^{83121327668446} is an apocalyptic number.

83121327668446 is a deficient number, since it is larger than the sum of its proper divisors (41560663834226).

83121327668446 is a wasteful number, since it uses less digits than its factorization.

83121327668446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41560663834225.

The product of its digits is 55738368, while the sum is 61.

The spelling of 83121327668446 in words is "eighty-three trillion, one hundred twenty-one billion, three hundred twenty-seven million, six hundred sixty-eight thousand, four hundred forty-six".