74521644603 has 16 divisors (see below), whose sum is σ = 114994222080. Its totient is φ = 42044760576.

The previous prime is 74521644563. The next prime is 74521644619. The reversal of 74521644603 is 30644612547.

It is a happy number.

It is not a de Polignac number, because 74521644603 - 2¹² = 74521640507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74521644103) 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, 22458150 + ... + 22461467.

It is an arithmetic number, because the mean of its divisors is an integer number (7187138880).

Almost surely, 2^74521644603 is an apocalyptic number.

74521644603 is a deficient number, since it is larger than the sum of its proper divisors (40472577477).

74521644603 is a wasteful number, since it uses less digits than its factorization.

74521644603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44919706.

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 74521644603 in words is "seventy-four billion, five hundred twenty-one million, six hundred forty-four thousand, six hundred three".