61005115272 has 32 divisors (see below), whose sum is σ = 155757744000. Its totient is φ = 19902377664.

The previous prime is 61005115267. The next prime is 61005115309. The reversal of 61005115272 is 27251150016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27040147 + ... + 27042402.

It is an arithmetic number, because the mean of its divisors is an integer number (4867429500).

Almost surely, 2^61005115272 is an apocalyptic number.

It is an amenable number.

61005115272 is an abundant number, since it is smaller than the sum of its proper divisors (94752628728).

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

61005115272 is a wasteful number, since it uses less digits than its factorization.

61005115272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54082605 (or 54082601 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

Adding to 61005115272 its reverse (27251150016), we get a palindrome (88256265288).

The spelling of 61005115272 in words is "sixty-one billion, five million, one hundred fifteen thousand, two hundred seventy-two".