42163503997 has 2 divisors, whose sum is σ = 42163503998. Its totient is φ = 42163503996.

The previous prime is 42163503971. The next prime is 42163504001. The reversal of 42163503997 is 79930536124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32835614436 + 9327889561 = 181206^2 + 96581^2 .

It is a cyclic number.

It is not a de Polignac number, because 42163503997 - 2²³ = 42155115389 is a prime.

It is a super-2 number, since 2×42163503997² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42163503997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42163506997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21081751998 + 21081751999.

It is an arithmetic number, because the mean of its divisors is an integer number (21081751999).

Almost surely, 2^42163503997 is an apocalyptic number.

It is an amenable number.

42163503997 is a deficient number, since it is larger than the sum of its proper divisors (1).

42163503997 is an equidigital number, since it uses as much as digits as its factorization.

42163503997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 42163503997 in words is "forty-two billion, one hundred sixty-three million, five hundred three thousand, nine hundred ninety-seven".