90556647489068 has 96 divisors (see below), whose sum is σ = 172966940879040. Its totient is φ = 41310289059840.

The previous prime is 90556647489053. The next prime is 90556647489097. The reversal of 90556647489068 is 86098474665509.

It is a self number, because there is not a number n which added to its sum of digits gives 90556647489068.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1885433678 + ... + 1885481706.

It is an arithmetic number, because the mean of its divisors is an integer number (1801738967490).

Almost surely, 2^{90556647489068} is an apocalyptic number.

It is an amenable number.

90556647489068 is a deficient number, since it is larger than the sum of its proper divisors (82410293389972).

90556647489068 is a wasteful number, since it uses less digits than its factorization.

90556647489068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50835 (or 50833 counting only the distinct ones).

The product of its (nonzero) digits is 3135283200, while the sum is 77.

The spelling of 90556647489068 in words is "ninety trillion, five hundred fifty-six billion, six hundred forty-seven million, four hundred eighty-nine thousand, sixty-eight".