97142224979 has 2 divisors, whose sum is σ = 97142224980. Its totient is φ = 97142224978.

The previous prime is 97142224969. The next prime is 97142225029. The reversal of 97142224979 is 97942224179.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97142224979 is a prime.

It is a super-2 number, since 2×97142224979² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97142224969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48571112489 + 48571112490.

It is an arithmetic number, because the mean of its divisors is an integer number (48571112490).

Almost surely, 2^97142224979 is an apocalyptic number.

97142224979 is a deficient number, since it is larger than the sum of its proper divisors (1).

97142224979 is an equidigital number, since it uses as much as digits as its factorization.

97142224979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 56.

The spelling of 97142224979 in words is "ninety-seven billion, one hundred forty-two million, two hundred twenty-four thousand, nine hundred seventy-nine".