68570498929657 has 2 divisors, whose sum is σ = 68570498929658. Its totient is φ = 68570498929656.

The previous prime is 68570498929649. The next prime is 68570498929703. The reversal of 68570498929657 is 75692989407586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62345094683881 + 6225404245776 = 7895891^2 + 2495076^2 .

It is a cyclic number.

It is not a de Polignac number, because 68570498929657 - 2³ = 68570498929649 is a prime.

It is not a weakly prime, because it can be changed into another prime (68570498929627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34285249464828 + 34285249464829.

It is an arithmetic number, because the mean of its divisors is an integer number (34285249464829).

Almost surely, 2^{68570498929657} is an apocalyptic number.

It is an amenable number.

68570498929657 is a deficient number, since it is larger than the sum of its proper divisors (1).

68570498929657 is an equidigital number, since it uses as much as digits as its factorization.

68570498929657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16460236800, while the sum is 85.

The spelling of 68570498929657 in words is "sixty-eight trillion, five hundred seventy billion, four hundred ninety-eight million, nine hundred twenty-nine thousand, six hundred fifty-seven".