55020306660040 has 16 divisors (see below), whose sum is σ = 123795689985180. Its totient is φ = 22008122664000.

The previous prime is 55020306660023. The next prime is 55020306660079. The reversal of 55020306660040 is 4006660302055.

It can be written as a sum of positive squares in 2 ways, for example, as 52353010149444 + 2667296510596 = 7235538^2 + 1633186^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687753833211 + ... + 687753833290.

Almost surely, 2^{55020306660040} is an apocalyptic number.

It is an amenable number.

55020306660040 is an abundant number, since it is smaller than the sum of its proper divisors (68775383325140).

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

55020306660040 is a wasteful number, since it uses less digits than its factorization.

55020306660040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375507666512 (or 1375507666508 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 55020306660040 its reverse (4006660302055), we get a palindrome (59026966962095).

The spelling of 55020306660040 in words is "fifty-five trillion, twenty billion, three hundred six million, six hundred sixty thousand, forty".