2103307926961 has 2 divisors, whose sum is σ = 2103307926962. Its totient is φ = 2103307926960.

The previous prime is 2103307926913. The next prime is 2103307927003. The reversal of 2103307926961 is 1696297033012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2024448054561 + 78859872400 = 1422831^2 + 280820^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103307926961 - 2¹⁷ = 2103307795889 is a prime.

It is not a weakly prime, because it can be changed into another prime (2103307926911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051653963480 + 1051653963481.

It is an arithmetic number, because the mean of its divisors is an integer number (1051653963481).

Almost surely, 2^{2103307926961} is an apocalyptic number.

It is an amenable number.

2103307926961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103307926961 is an equidigital number, since it uses as much as digits as its factorization.

2103307926961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 49.

The spelling of 2103307926961 in words is "two trillion, one hundred three billion, three hundred seven million, nine hundred twenty-six thousand, nine hundred sixty-one".