247555292797 has 2 divisors, whose sum is σ = 247555292798. Its totient is φ = 247555292796.

The previous prime is 247555292773. The next prime is 247555292801. The reversal of 247555292797 is 797292555742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176216087961 + 71339204836 = 419781^2 + 267094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247555292797 is a prime.

It is a super-2 number, since 2×247555292797² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247555292717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123777646398 + 123777646399.

It is an arithmetic number, because the mean of its divisors is an integer number (123777646399).

Almost surely, 2^247555292797 is an apocalyptic number.

It is an amenable number.

247555292797 is a deficient number, since it is larger than the sum of its proper divisors (1).

247555292797 is an equidigital number, since it uses as much as digits as its factorization.

247555292797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 111132000, while the sum is 64.

The spelling of 247555292797 in words is "two hundred forty-seven billion, five hundred fifty-five million, two hundred ninety-two thousand, seven hundred ninety-seven".