61312937012 has 6 divisors (see below), whose sum is σ = 107297639778. Its totient is φ = 30656468504.

The previous prime is 61312936991. The next prime is 61312937029. The reversal of 61312937012 is 21073921316.

It can be written as a sum of positive squares in only one way, i.e., 39690999076 + 21621937936 = 199226^2 + 147044^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7664117123 + ... + 7664117130.

It is an arithmetic number, because the mean of its divisors is an integer number (17882939963).

Almost surely, 2^61312937012 is an apocalyptic number.

It is an amenable number.

61312937012 is a deficient number, since it is larger than the sum of its proper divisors (45984702766).

61312937012 is a wasteful number, since it uses less digits than its factorization.

61312937012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15328234257 (or 15328234255 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The spelling of 61312937012 in words is "sixty-one billion, three hundred twelve million, nine hundred thirty-seven thousand, twelve".