83121101417245 has 4 divisors (see below), whose sum is σ = 99745321700700. Its totient is φ = 66496881133792.

The previous prime is 83121101417219. The next prime is 83121101417329. The reversal of 83121101417245 is 54271410112138.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11479994109796 + 71641107307449 = 3388214^2 + 8464107^2 .

It is a cyclic number.

It is not a de Polignac number, because 83121101417245 - 2³⁵ = 83086741678877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83121101417198 and 83121101417207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8312110141720 + ... + 8312110141729.

It is an arithmetic number, because the mean of its divisors is an integer number (24936330425175).

Almost surely, 2^{83121101417245} is an apocalyptic number.

It is an amenable number.

83121101417245 is a deficient number, since it is larger than the sum of its proper divisors (16624220283455).

83121101417245 is a wasteful number, since it uses less digits than its factorization.

83121101417245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16624220283454.

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 83121101417245 in words is "eighty-three trillion, one hundred twenty-one billion, one hundred one million, four hundred seventeen thousand, two hundred forty-five".