61866727926156 has 36 divisors (see below), whose sum is σ = 156385949304312. Its totient is φ = 20622162298944.

The previous prime is 61866727926151. The next prime is 61866727926167. The reversal of 61866727926156 is 65162972766816.

61866727926156 is a `hidden beast` number, since 6 + 186 + 6 + 7 + 279 + 26 + 156 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-4 number, since 4×61866727926156⁴ (a number of 56 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (61866727926151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6410755 + ... + 12838661.

It is an arithmetic number, because the mean of its divisors is an integer number (4344054147342).

Almost surely, 2^{61866727926156} is an apocalyptic number.

It is an amenable number.

61866727926156 is an abundant number, since it is smaller than the sum of its proper divisors (94519221378156).

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

61866727926156 is a wasteful number, since it uses less digits than its factorization.

61866727926156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6695270 (or 6695265 counting only the distinct ones).

The product of its digits is 548674560, while the sum is 72.

The spelling of 61866727926156 in words is "sixty-one trillion, eight hundred sixty-six billion, seven hundred twenty-seven million, nine hundred twenty-six thousand, one hundred fifty-six".