28486546664 has 8 divisors (see below), whose sum is σ = 53412275010. Its totient is φ = 14243273328.

The previous prime is 28486546663. The next prime is 28486546703. The reversal of 28486546664 is 46664568482.

It can be written as a sum of positive squares in only one way, i.e., 27874973764 + 611572900 = 166958^2 + 24730^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×28486546664² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28486546663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1780409159 + ... + 1780409174.

Almost surely, 2^28486546664 is an apocalyptic number.

It is an amenable number.

28486546664 is a deficient number, since it is larger than the sum of its proper divisors (24925728346).

28486546664 is a wasteful number, since it uses less digits than its factorization.

28486546664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560818339 (or 3560818335 counting only the distinct ones).

The product of its digits is 53084160, while the sum is 59.

The spelling of 28486546664 in words is "twenty-eight billion, four hundred eighty-six million, five hundred forty-six thousand, six hundred sixty-four".