1201415193961 has 2 divisors, whose sum is σ = 1201415193962. Its totient is φ = 1201415193960.

The previous prime is 1201415193917. The next prime is 1201415193977. The reversal of 1201415193961 is 1693915141021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 617726833936 + 583688360025 = 785956^2 + 763995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201415193961 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201415193911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600707596980 + 600707596981.

It is an arithmetic number, because the mean of its divisors is an integer number (600707596981).

Almost surely, 2^{1201415193961} is an apocalyptic number.

It is an amenable number.

1201415193961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201415193961 is an equidigital number, since it uses as much as digits as its factorization.

1201415193961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 43.

The spelling of 1201415193961 in words is "one trillion, two hundred one billion, four hundred fifteen million, one hundred ninety-three thousand, nine hundred sixty-one".