61310709712 has 40 divisors (see below), whose sum is σ = 143745281856. Its totient is φ = 24730369536.

The previous prime is 61310709701. The next prime is 61310709739. The reversal of 61310709712 is 21790701316.

It is a super-2 number, since 2×61310709712² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16098598 + ... + 16102405.

Almost surely, 2^61310709712 is an apocalyptic number.

It is an amenable number.

61310709712 is an abundant number, since it is smaller than the sum of its proper divisors (82434572144).

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

61310709712 is a wasteful number, since it uses less digits than its factorization.

61310709712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32201035 (or 32201029 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 37.

The spelling of 61310709712 in words is "sixty-one billion, three hundred ten million, seven hundred nine thousand, seven hundred twelve".