28707362066550 has 48 divisors (see below), whose sum is σ = 71194859732880. Its totient is φ = 7655231840640.

The previous prime is 28707362066531. The next prime is 28707362066609. The reversal of 28707362066550 is 5566026370782.

It is a super-2 number, since 2×28707362066550² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18531724 + ... + 20020976.

It is an arithmetic number, because the mean of its divisors is an integer number (1483226244435).

Almost surely, 2^{28707362066550} is an apocalyptic number.

28707362066550 is an abundant number, since it is smaller than the sum of its proper divisors (42487497666330).

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

28707362066550 is a wasteful number, since it uses less digits than its factorization.

28707362066550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617777 (or 1617772 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 57.

The spelling of 28707362066550 in words is "twenty-eight trillion, seven hundred seven billion, three hundred sixty-two million, sixty-six thousand, five hundred fifty".