61273707312 has 40 divisors (see below), whose sum is σ = 158353069120. Its totient is φ = 20416484160.

The previous prime is 61273707251. The next prime is 61273707343. The reversal of 61273707312 is 21370737216.

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, 129514 + ... + 373257.

It is an arithmetic number, because the mean of its divisors is an integer number (3958826728).

Almost surely, 2^61273707312 is an apocalyptic number.

It is an amenable number.

61273707312 is an abundant number, since it is smaller than the sum of its proper divisors (97079361808).

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

61273707312 is a wasteful number, since it uses less digits than its factorization.

61273707312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505321 (or 505315 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 39.

The spelling of 61273707312 in words is "sixty-one billion, two hundred seventy-three million, seven hundred seven thousand, three hundred twelve".