121461490613 has 2 divisors, whose sum is σ = 121461490614. Its totient is φ = 121461490612.

The previous prime is 121461490609. The next prime is 121461490643. The reversal of 121461490613 is 316094164121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87094633924 + 34366856689 = 295118^2 + 185383^2 .

It is a cyclic number.

It is not a de Polignac number, because 121461490613 - 2² = 121461490609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121461490643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60730745306 + 60730745307.

It is an arithmetic number, because the mean of its divisors is an integer number (60730745307).

Almost surely, 2^121461490613 is an apocalyptic number.

It is an amenable number.

121461490613 is a deficient number, since it is larger than the sum of its proper divisors (1).

121461490613 is an equidigital number, since it uses as much as digits as its factorization.

121461490613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 121461490613 in words is "one hundred twenty-one billion, four hundred sixty-one million, four hundred ninety thousand, six hundred thirteen".