61353944988 has 48 divisors (see below), whose sum is σ = 163625462784. Its totient is φ = 17528097600.

The previous prime is 61353944963. The next prime is 61353945017. The reversal of 61353944988 is 88944935316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1133338 + ... + 1186238.

It is an arithmetic number, because the mean of its divisors is an integer number (3408863808).

Almost surely, 2^61353944988 is an apocalyptic number.

It is an amenable number.

61353944988 is an abundant number, since it is smaller than the sum of its proper divisors (102271517796).

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

61353944988 is a wasteful number, since it uses less digits than its factorization.

61353944988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66722 (or 66720 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 60.

The spelling of 61353944988 in words is "sixty-one billion, three hundred fifty-three million, nine hundred forty-four thousand, nine hundred eighty-eight".