61009131927 has 8 divisors (see below), whose sum is σ = 81434028160. Its totient is φ = 40628495160.

The previous prime is 61009131923. The next prime is 61009132001. The reversal of 61009131927 is 72913190016.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61009131927 - 2² = 61009131923 is a prime.

It is a super-2 number, since 2×61009131927² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61009131923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11061649 + ... + 11067162.

It is an arithmetic number, because the mean of its divisors is an integer number (10179253520).

Almost surely, 2^61009131927 is an apocalyptic number.

61009131927 is a deficient number, since it is larger than the sum of its proper divisors (20424896233).

61009131927 is a wasteful number, since it uses less digits than its factorization.

61009131927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22129733.

The product of its (nonzero) digits is 20412, while the sum is 39.

The spelling of 61009131927 in words is "sixty-one billion, nine million, one hundred thirty-one thousand, nine hundred twenty-seven".