67642474379 has 2 divisors, whose sum is σ = 67642474380. Its totient is φ = 67642474378.

The previous prime is 67642474373. The next prime is 67642474453. The reversal of 67642474379 is 97347424676.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67642474379 - 2¹⁶ = 67642408843 is a prime.

It is a super-2 number, since 2×67642474379² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67642474373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33821237189 + 33821237190.

It is an arithmetic number, because the mean of its divisors is an integer number (33821237190).

Almost surely, 2^67642474379 is an apocalyptic number.

67642474379 is a deficient number, since it is larger than the sum of its proper divisors (1).

67642474379 is an equidigital number, since it uses as much as digits as its factorization.

67642474379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42674688, while the sum is 59.

The spelling of 67642474379 in words is "sixty-seven billion, six hundred forty-two million, four hundred seventy-four thousand, three hundred seventy-nine".