67794900479989 has 2 divisors, whose sum is σ = 67794900479990. Its totient is φ = 67794900479988.

The previous prime is 67794900479947. The next prime is 67794900480067. The reversal of 67794900479989 is 98997400949776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51785539111089 + 16009361368900 = 7196217^2 + 4001170^2 .

It is a cyclic number.

It is not a de Polignac number, because 67794900479989 - 2²¹ = 67794898382837 is a prime.

It is a super-2 number, since 2×67794900479989² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67794900479689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33897450239994 + 33897450239995.

It is an arithmetic number, because the mean of its divisors is an integer number (33897450239995).

Almost surely, 2^{67794900479989} is an apocalyptic number.

It is an amenable number.

67794900479989 is a deficient number, since it is larger than the sum of its proper divisors (1).

67794900479989 is an equidigital number, since it uses as much as digits as its factorization.

67794900479989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15554923776, while the sum is 88.

The spelling of 67794900479989 in words is "sixty-seven trillion, seven hundred ninety-four billion, nine hundred million, four hundred seventy-nine thousand, nine hundred eighty-nine".