74374434437 has 4 divisors (see below), whose sum is σ = 75393262380. Its totient is φ = 73355606496.

The previous prime is 74374434353. The next prime is 74374434443. The reversal of 74374434437 is 73443447347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73443447347 = 127 ⋅578294861.

It can be written as a sum of positive squares in 2 ways, for example, as 44281205761 + 30093228676 = 210431^2 + 173474^2 .

It is a cyclic number.

It is not a de Polignac number, because 74374434437 - 2⁸ = 74374434181 is a prime.

It is a super-2 number, since 2×74374434437² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74374434137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509413862 + ... + 509414007.

It is an arithmetic number, because the mean of its divisors is an integer number (18848315595).

Almost surely, 2^74374434437 is an apocalyptic number.

It is an amenable number.

74374434437 is a deficient number, since it is larger than the sum of its proper divisors (1018827943).

74374434437 is a wasteful number, since it uses less digits than its factorization.

74374434437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018827942.

The product of its digits is 9483264, while the sum is 50.

The spelling of 74374434437 in words is "seventy-four billion, three hundred seventy-four million, four hundred thirty-four thousand, four hundred thirty-seven".