961809610451 has 2 divisors, whose sum is σ = 961809610452. Its totient is φ = 961809610450.

The previous prime is 961809610423. The next prime is 961809610471. The reversal of 961809610451 is 154016908169.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 961809610451 - 2⁶ = 961809610387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 961809610451.

It is not a weakly prime, because it can be changed into another prime (961809610471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480904805225 + 480904805226.

It is an arithmetic number, because the mean of its divisors is an integer number (480904805226).

Almost surely, 2^961809610451 is an apocalyptic number.

961809610451 is a deficient number, since it is larger than the sum of its proper divisors (1).

961809610451 is an equidigital number, since it uses as much as digits as its factorization.

961809610451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 50.

The spelling of 961809610451 in words is "nine hundred sixty-one billion, eight hundred nine million, six hundred ten thousand, four hundred fifty-one".