65554001980 has 96 divisors (see below), whose sum is σ = 141692785920. Its totient is φ = 25466918400.

The previous prime is 65554001969. The next prime is 65554002001. The reversal of 65554001980 is 8910045556.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62372455 + ... + 62373505.

It is an arithmetic number, because the mean of its divisors is an integer number (1475966520).

Almost surely, 2^65554001980 is an apocalyptic number.

It is an amenable number.

65554001980 is an abundant number, since it is smaller than the sum of its proper divisors (76138783940).

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

65554001980 is a wasteful number, since it uses less digits than its factorization.

65554001980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739 (or 1737 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 65554001980 in words is "sixty-five billion, five hundred fifty-four million, one thousand, nine hundred eighty".