6920742511 has 2 divisors, whose sum is σ = 6920742512. Its totient is φ = 6920742510.

The previous prime is 6920742431. The next prime is 6920742583. The reversal of 6920742511 is 1152470296.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6920742511 - 2⁹ = 6920741999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6920742011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3460371255 + 3460371256.

It is an arithmetic number, because the mean of its divisors is an integer number (3460371256).

Almost surely, 2^6920742511 is an apocalyptic number.

6920742511 is a deficient number, since it is larger than the sum of its proper divisors (1).

6920742511 is an equidigital number, since it uses as much as digits as its factorization.

6920742511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 6920742511 is about 83191.0001803080. Note that the first 3 decimals coincide. The cubic root of 6920742511 is about 1905.6840415408.

The spelling of 6920742511 in words is "six billion, nine hundred twenty million, seven hundred forty-two thousand, five hundred eleven".