74402820447 has 16 divisors (see below), whose sum is σ = 100130316000. Its totient is φ = 49138752384.

The previous prime is 74402820433. The next prime is 74402820491.

74402820447 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 74402820447 - 2⁴ = 74402820431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74402820399 and 74402820408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74402820847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2492929 + ... + 2522597.

It is an arithmetic number, because the mean of its divisors is an integer number (6258144750).

Almost surely, 2^74402820447 is an apocalyptic number.

74402820447 is a deficient number, since it is larger than the sum of its proper divisors (25727495553).

74402820447 is a wasteful number, since it uses less digits than its factorization.

74402820447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37450.

The product of its (nonzero) digits is 401408, while the sum is 42.

The spelling of 74402820447 in words is "seventy-four billion, four hundred two million, eight hundred twenty thousand, four hundred forty-seven".