140521002645 has 16 divisors (see below), whose sum is σ = 224845875072. Its totient is φ = 74940444480.

The previous prime is 140521002641. The next prime is 140521002647. The reversal of 140521002645 is 546200125041.

140521002645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140521002645 - 2² = 140521002641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140521002641) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 39339 + ... + 531591.

It is an arithmetic number, because the mean of its divisors is an integer number (14052867192).

Almost surely, 2^140521002645 is an apocalyptic number.

140521002645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140521002645 is a deficient number, since it is larger than the sum of its proper divisors (84324872427).

140521002645 is a wasteful number, since it uses less digits than its factorization.

140521002645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511292.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 140521002645 its reverse (546200125041), we get a palindrome (686721127686).

The spelling of 140521002645 in words is "one hundred forty billion, five hundred twenty-one million, two thousand, six hundred forty-five".