7642700756081 has 2 divisors, whose sum is σ = 7642700756082. Its totient is φ = 7642700756080.

The previous prime is 7642700756057. The next prime is 7642700756101. The reversal of 7642700756081 is 1806570072467.

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., 7432057392400 + 210643363681 = 2726180^2 + 458959^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7642700756081 is a prime.

It is a super-2 number, since 2×7642700756081² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7642700756881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3821350378040 + 3821350378041.

It is an arithmetic number, because the mean of its divisors is an integer number (3821350378041).

Almost surely, 2^{7642700756081} is an apocalyptic number.

It is an amenable number.

7642700756081 is a deficient number, since it is larger than the sum of its proper divisors (1).

7642700756081 is an equidigital number, since it uses as much as digits as its factorization.

7642700756081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3951360, while the sum is 53.

The spelling of 7642700756081 in words is "seven trillion, six hundred forty-two billion, seven hundred million, seven hundred fifty-six thousand, eighty-one".