2956939485649 has 2 divisors, whose sum is σ = 2956939485650. Its totient is φ = 2956939485648.

The previous prime is 2956939485637. The next prime is 2956939485667. The reversal of 2956939485649 is 9465849396592.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2954325004225 + 2614481424 = 1718815^2 + 51132^2 .

It is a cyclic number.

It is not a de Polignac number, because 2956939485649 - 2¹⁵ = 2956939452881 is a prime.

It is a super-2 number, since 2×2956939485649² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2956939185649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1478469742824 + 1478469742825.

It is an arithmetic number, because the mean of its divisors is an integer number (1478469742825).

Almost surely, 2^{2956939485649} is an apocalyptic number.

It is an amenable number.

2956939485649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2956939485649 is an equidigital number, since it uses as much as digits as its factorization.

2956939485649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4534963200, while the sum is 79.

The spelling of 2956939485649 in words is "two trillion, nine hundred fifty-six billion, nine hundred thirty-nine million, four hundred eighty-five thousand, six hundred forty-nine".