61273872012 has 48 divisors (see below), whose sum is σ = 143895830400. Its totient is φ = 20293104000.

The previous prime is 61273871969. The next prime is 61273872013. The reversal of 61273872012 is 21027837216.

It is not an unprimeable number, because it can be changed into a prime (61273872013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1207039 + ... + 1256777.

It is an arithmetic number, because the mean of its divisors is an integer number (2997829800).

Almost surely, 2^61273872012 is an apocalyptic number.

It is an amenable number.

61273872012 is an abundant number, since it is smaller than the sum of its proper divisors (82621958388).

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

61273872012 is a wasteful number, since it uses less digits than its factorization.

61273872012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50406 (or 50404 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The spelling of 61273872012 in words is "sixty-one billion, two hundred seventy-three million, eight hundred seventy-two thousand, twelve".