3640543122450 has 96 divisors (see below), whose sum is σ = 9738222463872. Its totient is φ = 894735360000.

The previous prime is 3640543122407. The next prime is 3640543122533. The reversal of 3640543122450 is 542213450463.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 3640543122399 and 3640543122408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 206326 + ... + 2706225.

It is an arithmetic number, because the mean of its divisors is an integer number (101439817332).

Almost surely, 2^{3640543122450} is an apocalyptic number.

3640543122450 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3640543122450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4869111231936).

3640543122450 is an abundant number, since it is smaller than the sum of its proper divisors (6097679341422).

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

3640543122450 is a wasteful number, since it uses less digits than its factorization.

3640543122450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913220 (or 2913215 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 3640543122450 in words is "three trillion, six hundred forty billion, five hundred forty-three million, one hundred twenty-two thousand, four hundred fifty".