83354121797 has 2 divisors, whose sum is σ = 83354121798. Its totient is φ = 83354121796.

The previous prime is 83354121757. The next prime is 83354121803. The reversal of 83354121797 is 79712145338.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80636689156 + 2717432641 = 283966^2 + 52129^2 .

It is a cyclic number.

It is not a de Polignac number, because 83354121797 - 2⁶ = 83354121733 is a prime.

It is a super-2 number, since 2×83354121797² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83354121757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41677060898 + 41677060899.

It is an arithmetic number, because the mean of its divisors is an integer number (41677060899).

Almost surely, 2^83354121797 is an apocalyptic number.

It is an amenable number.

83354121797 is a deficient number, since it is larger than the sum of its proper divisors (1).

83354121797 is an equidigital number, since it uses as much as digits as its factorization.

83354121797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 50.

The spelling of 83354121797 in words is "eighty-three billion, three hundred fifty-four million, one hundred twenty-one thousand, seven hundred ninety-seven".