564999789450 has 48 divisors (see below), whose sum is σ = 1401375458016. Its totient is φ = 150647688000.

The previous prime is 564999789433. The next prime is 564999789503. The reversal of 564999789450 is 54987999465.

It is a Harshad number since it is a multiple of its sum of digits (75).

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, 982669 + ... + 1447631.

It is an arithmetic number, because the mean of its divisors is an integer number (29195322042).

Almost surely, 2^564999789450 is an apocalyptic number.

564999789450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

564999789450 is an abundant number, since it is smaller than the sum of its proper divisors (836375668566).

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

564999789450 is a wasteful number, since it uses less digits than its factorization.

564999789450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473079 (or 473074 counting only the distinct ones).

The product of its (nonzero) digits is 881798400, while the sum is 75.

The spelling of 564999789450 in words is "five hundred sixty-four billion, nine hundred ninety-nine million, seven hundred eighty-nine thousand, four hundred fifty".