798157848751897 has 4 divisors (see below), whose sum is σ = 798239854088740. Its totient is φ = 798075843415056.

The previous prime is 798157848751889. The next prime is 798157848751957.

798157848751897 is nontrivially palindromic in base 10.

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 636291745830976 + 161866102920921 = 25224824^2 + 12722661^2 .

It is a cyclic number.

It is not a de Polignac number, because 798157848751897 - 2³ = 798157848751889 is a prime.

It is a super-2 number, since 2×798157848751897² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (798157848751877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41002653822 + ... + 41002673287.

It is an arithmetic number, because the mean of its divisors is an integer number (199559963522185).

Almost surely, 2^{798157848751897} is an apocalyptic number.

It is an amenable number.

798157848751897 is a deficient number, since it is larger than the sum of its proper divisors (82005336843).

798157848751897 is an equidigital number, since it uses as much as digits as its factorization.

798157848751897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82005336842.

The product of its digits is 79659417600, while the sum is 94.

The spelling of 798157848751897 in words is "seven hundred ninety-eight trillion, one hundred fifty-seven billion, eight hundred forty-eight million, seven hundred fifty-one thousand, eight hundred ninety-seven".