605400556500 has 144 divisors (see below), whose sum is σ = 1922003765136. Its totient is φ = 160411680000.

The previous prime is 605400556483. The next prime is 605400556513. The reversal of 605400556500 is 5655004506.

It is a happy number.

605400556500 is a `hidden beast` number, since 6 + 0 + 54 + 0 + 0 + 556 + 50 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 224795463876 + 380605092624 = 474126^2 + 616932^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 278050 + ... + 1134950.

It is an arithmetic number, because the mean of its divisors is an integer number (13347248369).

Almost surely, 2^605400556500 is an apocalyptic number.

605400556500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 605400556500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961001882568).

605400556500 is an abundant number, since it is smaller than the sum of its proper divisors (1316603208636).

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

605400556500 is a wasteful number, since it uses less digits than its factorization.

605400556500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857083 (or 857068 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 605400556500 in words is "six hundred five billion, four hundred million, five hundred fifty-six thousand, five hundred".