352207738681 has 2 divisors, whose sum is σ = 352207738682. Its totient is φ = 352207738680.

The previous prime is 352207738661. The next prime is 352207738693. The reversal of 352207738681 is 186837702253.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311039328681 + 41168410000 = 557709^2 + 202900^2 .

It is an emirp because it is prime and its reverse (186837702253) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-352207738681 is a prime.

It is a super-2 number, since 2×352207738681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (352207738661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176103869340 + 176103869341.

It is an arithmetic number, because the mean of its divisors is an integer number (176103869341).

Almost surely, 2^352207738681 is an apocalyptic number.

It is an amenable number.

352207738681 is a deficient number, since it is larger than the sum of its proper divisors (1).

352207738681 is an equidigital number, since it uses as much as digits as its factorization.

352207738681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 352207738681 in words is "three hundred fifty-two billion, two hundred seven million, seven hundred thirty-eight thousand, six hundred eighty-one".