32626561661 has 16 divisors (see below), whose sum is σ = 34418780160. Its totient is φ = 30881485440.

The previous prime is 32626561633. The next prime is 32626561697. The reversal of 32626561661 is 16616562623.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32626561661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32626561061) 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, 2425025 + ... + 2438441.

It is an arithmetic number, because the mean of its divisors is an integer number (2151173760).

Almost surely, 2^32626561661 is an apocalyptic number.

32626561661 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

32626561661 is a deficient number, since it is larger than the sum of its proper divisors (1792218499).

32626561661 is a wasteful number, since it uses less digits than its factorization.

32626561661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15164.

The product of its digits is 466560, while the sum is 44.

The spelling of 32626561661 in words is "thirty-two billion, six hundred twenty-six million, five hundred sixty-one thousand, six hundred sixty-one".