61227471085 has 32 divisors (see below), whose sum is σ = 81062601984. Its totient is φ = 44024640000.

The previous prime is 61227471049. The next prime is 61227471089. The reversal of 61227471085 is 58017472216.

It is not a de Polignac number, because 61227471085 - 2⁷ = 61227470957 is a prime.

It is a super-2 number, since 2×61227471085² (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 (61227471089) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4030905 + ... + 4046065.

It is an arithmetic number, because the mean of its divisors is an integer number (2533206312).

Almost surely, 2^61227471085 is an apocalyptic number.

It is an amenable number.

61227471085 is a deficient number, since it is larger than the sum of its proper divisors (19835130899).

61227471085 is a wasteful number, since it uses less digits than its factorization.

61227471085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16005.

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 61227471085 in words is "sixty-one billion, two hundred twenty-seven million, four hundred seventy-one thousand, eighty-five".