61134145465640 has 32 divisors (see below), whose sum is σ = 148132737091080. Its totient is φ = 22572607556352.

The previous prime is 61134145465633. The next prime is 61134145465681. The reversal of 61134145465640 is 4656454143116.

61134145465640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 42016246216036 + 19117899249604 = 6481994^2 + 4372402^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58782831659 + ... + 58782832698.

Almost surely, 2^{61134145465640} is an apocalyptic number.

It is an amenable number.

61134145465640 is an abundant number, since it is smaller than the sum of its proper divisors (86998591625440).

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

61134145465640 is a wasteful number, since it uses less digits than its factorization.

61134145465640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117565664381 (or 117565664377 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 50.

The spelling of 61134145465640 in words is "sixty-one trillion, one hundred thirty-four billion, one hundred forty-five million, four hundred sixty-five thousand, six hundred forty".