2620556706437 has 2 divisors, whose sum is σ = 2620556706438. Its totient is φ = 2620556706436.

The previous prime is 2620556706433. The next prime is 2620556706491. The reversal of 2620556706437 is 7346076550262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1615418122081 + 1005138584356 = 1270991^2 + 1002566^2 .

It is a cyclic number.

It is not a de Polignac number, because 2620556706437 - 2² = 2620556706433 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2620556706431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310278353218 + 1310278353219.

It is an arithmetic number, because the mean of its divisors is an integer number (1310278353219).

Almost surely, 2^{2620556706437} is an apocalyptic number.

It is an amenable number.

2620556706437 is a deficient number, since it is larger than the sum of its proper divisors (1).

2620556706437 is an equidigital number, since it uses as much as digits as its factorization.

2620556706437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12700800, while the sum is 53.

The spelling of 2620556706437 in words is "two trillion, six hundred twenty billion, five hundred fifty-six million, seven hundred six thousand, four hundred thirty-seven".