71703256357 has 2 divisors, whose sum is σ = 71703256358. Its totient is φ = 71703256356.

The previous prime is 71703256279. The next prime is 71703256363. The reversal of 71703256357 is 75365230717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48731004001 + 22972252356 = 220751^2 + 151566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71703256357 is a prime.

It is a super-2 number, since 2×71703256357² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71703206357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35851628178 + 35851628179.

It is an arithmetic number, because the mean of its divisors is an integer number (35851628179).

Almost surely, 2^71703256357 is an apocalyptic number.

It is an amenable number.

71703256357 is a deficient number, since it is larger than the sum of its proper divisors (1).

71703256357 is an equidigital number, since it uses as much as digits as its factorization.

71703256357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 926100, while the sum is 46.

The spelling of 71703256357 in words is "seventy-one billion, seven hundred three million, two hundred fifty-six thousand, three hundred fifty-seven".