42491699619371 has 2 divisors, whose sum is σ = 42491699619372. Its totient is φ = 42491699619370.

The previous prime is 42491699619367. The next prime is 42491699619449. The reversal of 42491699619371 is 17391699619424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42491699619371 - 2² = 42491699619367 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42491699619295 and 42491699619304.

It is not a weakly prime, because it can be changed into another prime (42491692619371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21245849809685 + 21245849809686.

It is an arithmetic number, because the mean of its divisors is an integer number (21245849809686).

Almost surely, 2^{42491699619371} is an apocalyptic number.

42491699619371 is a deficient number, since it is larger than the sum of its proper divisors (1).

42491699619371 is an equidigital number, since it uses as much as digits as its factorization.

42491699619371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158723712, while the sum is 71.

The spelling of 42491699619371 in words is "forty-two trillion, four hundred ninety-one billion, six hundred ninety-nine million, six hundred nineteen thousand, three hundred seventy-one".