685313150128 has 10 divisors (see below), whose sum is σ = 1327794228404. Its totient is φ = 342656575056.

The previous prime is 685313150101. The next prime is 685313150129. The reversal of 685313150128 is 821051313586.

It is a happy number.

It is a super-2 number, since 2×685313150128² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (685313150129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21416035926 + ... + 21416035957.

Almost surely, 2^685313150128 is an apocalyptic number.

It is an amenable number.

685313150128 is a deficient number, since it is larger than the sum of its proper divisors (642481078276).

685313150128 is a wasteful number, since it uses less digits than its factorization.

685313150128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42832071891 (or 42832071885 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 685313150128 in words is "six hundred eighty-five billion, three hundred thirteen million, one hundred fifty thousand, one hundred twenty-eight".