10485423640 has 64 divisors (see below), whose sum is σ = 24682008960. Its totient is φ = 4004782080.

The previous prime is 10485423631. The next prime is 10485423677. The reversal of 10485423640 is 4632458401.

It is a self number, because there is not a number n which added to its sum of digits gives 10485423640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9064 + ... + 145096.

It is an arithmetic number, because the mean of its divisors is an integer number (385656390).

Almost surely, 2^10485423640 is an apocalyptic number.

10485423640 is a gapful number since it is divisible by the number (10) 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 10485423640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12341004480).

10485423640 is an abundant number, since it is smaller than the sum of its proper divisors (14196585320).

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

10485423640 is a wasteful number, since it uses less digits than its factorization.

10485423640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136132 (or 136128 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

The spelling of 10485423640 in words is "ten billion, four hundred eighty-five million, four hundred twenty-three thousand, six hundred forty".