121964663056739 has 2 divisors, whose sum is σ = 121964663056740. Its totient is φ = 121964663056738.

The previous prime is 121964663056697. The next prime is 121964663056751. The reversal of 121964663056739 is 937650366469121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121964663056739 - 2¹² = 121964663052643 is a prime.

It is a super-2 number, since 2×121964663056739² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121964663056799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60982331528369 + 60982331528370.

It is an arithmetic number, because the mean of its divisors is an integer number (60982331528370).

Almost surely, 2^{121964663056739} is an apocalyptic number.

121964663056739 is a deficient number, since it is larger than the sum of its proper divisors (1).

121964663056739 is an equidigital number, since it uses as much as digits as its factorization.

121964663056739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 264539520, while the sum is 68.

The spelling of 121964663056739 in words is "one hundred twenty-one trillion, nine hundred sixty-four billion, six hundred sixty-three million, fifty-six thousand, seven hundred thirty-nine".