34986549781 has 4 divisors (see below), whose sum is σ = 34997551564. Its totient is φ = 34975548000.

The previous prime is 34986549761. The next prime is 34986549833. The reversal of 34986549781 is 18794568943.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8666679025 + 26319870756 = 93095^2 + 162234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34986549781 is a prime.

It is a super-2 number, since 2×34986549781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34986549761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5496120 + ... + 5502481.

It is an arithmetic number, because the mean of its divisors is an integer number (8749387891).

Almost surely, 2^34986549781 is an apocalyptic number.

It is an amenable number.

34986549781 is a deficient number, since it is larger than the sum of its proper divisors (11001783).

34986549781 is a wasteful number, since it uses less digits than its factorization.

34986549781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11001782.

The product of its digits is 52254720, while the sum is 64.

The spelling of 34986549781 in words is "thirty-four billion, nine hundred eighty-six million, five hundred forty-nine thousand, seven hundred eighty-one".