947290870657 has 2 divisors, whose sum is σ = 947290870658. Its totient is φ = 947290870656.

The previous prime is 947290870517. The next prime is 947290870663. The reversal of 947290870657 is 756078092749.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 888647467761 + 58643402896 = 942681^2 + 242164^2 .

It is a cyclic number.

It is not a de Polignac number, because 947290870657 - 2¹¹ = 947290868609 is a prime.

It is a super-2 number, since 2×947290870657² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (947290870157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473645435328 + 473645435329.

It is an arithmetic number, because the mean of its divisors is an integer number (473645435329).

Almost surely, 2^947290870657 is an apocalyptic number.

It is an amenable number.

947290870657 is a deficient number, since it is larger than the sum of its proper divisors (1).

947290870657 is an equidigital number, since it uses as much as digits as its factorization.

947290870657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53343360, while the sum is 64.

The spelling of 947290870657 in words is "nine hundred forty-seven billion, two hundred ninety million, eight hundred seventy thousand, six hundred fifty-seven".