33127149661 has 16 divisors (see below), whose sum is σ = 34437984768. Its totient is φ = 31831833600.

The previous prime is 33127149641. The next prime is 33127149673. The reversal of 33127149661 is 16694172133.

It is a cyclic number.

It is not a de Polignac number, because 33127149661 - 2⁹ = 33127149149 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 (33127149631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6874725 + ... + 6879541.

It is an arithmetic number, because the mean of its divisors is an integer number (2152374048).

Almost surely, 2^33127149661 is an apocalyptic number.

33127149661 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

33127149661 is a deficient number, since it is larger than the sum of its proper divisors (1310835107).

33127149661 is a wasteful number, since it uses less digits than its factorization.

33127149661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6372.

The product of its digits is 163296, while the sum is 43.

The spelling of 33127149661 in words is "thirty-three billion, one hundred twenty-seven million, one hundred forty-nine thousand, six hundred sixty-one".