34640031561 has 16 divisors (see below), whose sum is σ = 47012382720. Its totient is φ = 22681231760.

The previous prime is 34640031557. The next prime is 34640031619. The reversal of 34640031561 is 16513004643.

It is a cyclic number.

It is not a de Polignac number, because 34640031561 - 2² = 34640031557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (34640031511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106516 + ... + 283946.

It is an arithmetic number, because the mean of its divisors is an integer number (2938273920).

Almost surely, 2^34640031561 is an apocalyptic number.

It is an amenable number.

34640031561 is a deficient number, since it is larger than the sum of its proper divisors (12372351159).

34640031561 is a wasteful number, since it uses less digits than its factorization.

34640031561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178596.

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 34640031561 in words is "thirty-four billion, six hundred forty million, thirty-one thousand, five hundred sixty-one".