34587806381 has 2 divisors, whose sum is σ = 34587806382. Its totient is φ = 34587806380.

The previous prime is 34587806347. The next prime is 34587806401. The reversal of 34587806381 is 18360878543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25011422500 + 9576383881 = 158150^2 + 97859^2 .

It is a cyclic number.

It is not a de Polignac number, because 34587806381 - 2¹⁴ = 34587789997 is a prime.

It is a super-2 number, since 2×34587806381² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34587806311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17293903190 + 17293903191.

It is an arithmetic number, because the mean of its divisors is an integer number (17293903191).

Almost surely, 2^34587806381 is an apocalyptic number.

It is an amenable number.

34587806381 is a deficient number, since it is larger than the sum of its proper divisors (1).

34587806381 is an equidigital number, since it uses as much as digits as its factorization.

34587806381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 34587806381 in words is "thirty-four billion, five hundred eighty-seven million, eight hundred six thousand, three hundred eighty-one".