61760036644 has 96 divisors (see below), whose sum is σ = 120222597600. Its totient is φ = 27628339200.

The previous prime is 61760036543. The next prime is 61760036677. The reversal of 61760036644 is 44663006716.

It can be written as a sum of positive squares in 16 ways, for example, as 13956587044 + 47803449600 = 118138^2 + 218640^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61760036644.

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 31 ways as a sum of consecutive naturals, for example, 51423244 + ... + 51424444.

It is an arithmetic number, because the mean of its divisors is an integer number (1252318725).

Almost surely, 2^61760036644 is an apocalyptic number.

It is an amenable number.

61760036644 is a deficient number, since it is larger than the sum of its proper divisors (58462560956).

61760036644 is a wasteful number, since it uses less digits than its factorization.

61760036644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633 (or 1631 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 43.

The spelling of 61760036644 in words is "sixty-one billion, seven hundred sixty million, thirty-six thousand, six hundred forty-four".