29161670000661 has 24 divisors (see below), whose sum is σ = 47536264582560. Its totient is φ = 17064300103200.

The previous prime is 29161670000653. The next prime is 29161670000693. The reversal of 29161670000661 is 16600007616192.

29161670000661 is a `hidden beast` number, since 29 + 1 + 616 + 7 + 0 + 0 + 0 + 0 + 6 + 6 + 1 = 666.

It is not a de Polignac number, because 29161670000661 - 2³ = 29161670000653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29161670000161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5078657875 + ... + 5078663616.

It is an arithmetic number, because the mean of its divisors is an integer number (1980677690940).

Almost surely, 2^{29161670000661} is an apocalyptic number.

It is an amenable number.

29161670000661 is a deficient number, since it is larger than the sum of its proper divisors (18374594581899).

29161670000661 is a wasteful number, since it uses less digits than its factorization.

29161670000661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10157321537 (or 10157321534 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 29161670000661 in words is "twenty-nine trillion, one hundred sixty-one billion, six hundred seventy million, six hundred sixty-one", and thus it is an aban number.