947257813967 has 2 divisors, whose sum is σ = 947257813968. Its totient is φ = 947257813966.

The previous prime is 947257813939. The next prime is 947257813973. The reversal of 947257813967 is 769318752749.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 947257813967 - 2²⁰ = 947256765391 is a prime.

It is a super-2 number, since 2×947257813967² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 947257813897 and 947257813906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947257813067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473628906983 + 473628906984.

It is an arithmetic number, because the mean of its divisors is an integer number (473628906984).

Almost surely, 2^947257813967 is an apocalyptic number.

947257813967 is a deficient number, since it is larger than the sum of its proper divisors (1).

947257813967 is an equidigital number, since it uses as much as digits as its factorization.

947257813967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 160030080, while the sum is 68.

The spelling of 947257813967 in words is "nine hundred forty-seven billion, two hundred fifty-seven million, eight hundred thirteen thousand, nine hundred sixty-seven".