68870187973 has 2 divisors, whose sum is σ = 68870187974. Its totient is φ = 68870187972.

The previous prime is 68870187941. The next prime is 68870188067. The reversal of 68870187973 is 37978107886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68694837409 + 175350564 = 262097^2 + 13242^2 .

It is a cyclic number.

It is not a de Polignac number, because 68870187973 - 2⁵ = 68870187941 is a prime.

It is a super-4 number, since 4×68870187973⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68870187913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34435093986 + 34435093987.

It is an arithmetic number, because the mean of its divisors is an integer number (34435093987).

Almost surely, 2^68870187973 is an apocalyptic number.

It is an amenable number.

68870187973 is a deficient number, since it is larger than the sum of its proper divisors (1).

68870187973 is an equidigital number, since it uses as much as digits as its factorization.

68870187973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28449792, while the sum is 64.

The spelling of 68870187973 in words is "sixty-eight billion, eight hundred seventy million, one hundred eighty-seven thousand, nine hundred seventy-three".