83121353111446 has 16 divisors (see below), whose sum is σ = 137395581889104. Its totient is φ = 37471522332384.

The previous prime is 83121353111383. The next prime is 83121353111477. The reversal of 83121353111446 is 64411135312138.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37174128181 + ... + 37174130416.

It is an arithmetic number, because the mean of its divisors is an integer number (8587223868069).

Almost surely, 2^{83121353111446} is an apocalyptic number.

83121353111446 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

83121353111446 is a deficient number, since it is larger than the sum of its proper divisors (54274228777658).

83121353111446 is a wasteful number, since it uses less digits than its factorization.

83121353111446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74348258655.

The product of its digits is 207360, while the sum is 43.

The spelling of 83121353111446 in words is "eighty-three trillion, one hundred twenty-one billion, three hundred fifty-three million, one hundred eleven thousand, four hundred forty-six".