6700947007021 has 2 divisors, whose sum is σ = 6700947007022. Its totient is φ = 6700947007020.

The previous prime is 6700947007003. The next prime is 6700947007033. The reversal of 6700947007021 is 1207007490076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5881449528900 + 819497478121 = 2425170^2 + 905261^2 .

It is a cyclic number.

It is not a de Polignac number, because 6700947007021 - 2¹⁷ = 6700946875949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6700947007421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3350473503510 + 3350473503511.

It is an arithmetic number, because the mean of its divisors is an integer number (3350473503511).

Almost surely, 2^{6700947007021} is an apocalyptic number.

It is an amenable number.

6700947007021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6700947007021 is an equidigital number, since it uses as much as digits as its factorization.

6700947007021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 43.

The spelling of 6700947007021 in words is "six trillion, seven hundred billion, nine hundred forty-seven million, seven thousand, twenty-one".