1420356610961 has 2 divisors, whose sum is σ = 1420356610962. Its totient is φ = 1420356610960.

The previous prime is 1420356610951. The next prime is 1420356610973. The reversal of 1420356610961 is 1690166530241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1418883586561 + 1473024400 = 1191169^2 + 38380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420356610961 is a prime.

It is not a weakly prime, because it can be changed into another prime (1420356610931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710178305480 + 710178305481.

It is an arithmetic number, because the mean of its divisors is an integer number (710178305481).

Almost surely, 2^{1420356610961} is an apocalyptic number.

It is an amenable number.

1420356610961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420356610961 is an equidigital number, since it uses as much as digits as its factorization.

1420356610961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 1420356610961 in words is "one trillion, four hundred twenty billion, three hundred fifty-six million, six hundred ten thousand, nine hundred sixty-one".