5661665156106 has 64 divisors (see below), whose sum is σ = 12670226064000. Its totient is φ = 1873930681728.

The previous prime is 5661665156087. The next prime is 5661665156113. The reversal of 5661665156106 is 6016515661665.

5661665156106 is a `hidden beast` number, since 5 + 6 + 6 + 1 + 6 + 6 + 5 + 15 + 610 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9362620 + ... + 9948968.

It is an arithmetic number, because the mean of its divisors is an integer number (197972282250).

Almost surely, 2^{5661665156106} is an apocalyptic number.

5661665156106 is an abundant number, since it is smaller than the sum of its proper divisors (7008560907894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5661665156106 is a wasteful number, since it uses less digits than its factorization.

5661665156106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587620 (or 587614 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 54.

The spelling of 5661665156106 in words is "five trillion, six hundred sixty-one billion, six hundred sixty-five million, one hundred fifty-six thousand, one hundred six".