1322639956961 has 2 divisors, whose sum is σ = 1322639956962. Its totient is φ = 1322639956960.

The previous prime is 1322639956949. The next prime is 1322639956969. The reversal of 1322639956961 is 1696599362231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 824316910561 + 498323046400 = 907919^2 + 705920^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322639956961 - 2¹⁰ = 1322639955937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1322639956894 and 1322639956903.

It is not a weakly prime, because it can be changed into another prime (1322639956969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661319978480 + 661319978481.

It is an arithmetic number, because the mean of its divisors is an integer number (661319978481).

Almost surely, 2^{1322639956961} is an apocalyptic number.

It is an amenable number.

1322639956961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322639956961 is an equidigital number, since it uses as much as digits as its factorization.

1322639956961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28343520, while the sum is 62.

The spelling of 1322639956961 in words is "one trillion, three hundred twenty-two billion, six hundred thirty-nine million, nine hundred fifty-six thousand, nine hundred sixty-one".