820550307475 has 24 divisors (see below), whose sum is σ = 1062166204512. Its totient is φ = 627635923200.

The previous prime is 820550307443. The next prime is 820550307509. The reversal of 820550307475 is 574703055028.

820550307475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 820550307475 - 2⁵ = 820550307443 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1077805 + ... + 1674145.

It is an arithmetic number, because the mean of its divisors is an integer number (44256925188).

Almost surely, 2^820550307475 is an apocalyptic number.

820550307475 is a deficient number, since it is larger than the sum of its proper divisors (241615897037).

820550307475 is a wasteful number, since it uses less digits than its factorization.

820550307475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598767 (or 598762 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 46.

The spelling of 820550307475 in words is "eight hundred twenty billion, five hundred fifty million, three hundred seven thousand, four hundred seventy-five".