74871068149 has 4 divisors (see below), whose sum is σ = 75086835264. Its totient is φ = 74655301036.

The previous prime is 74871068137. The next prime is 74871068189. The reversal of 74871068149 is 94186017847.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94186017847 = 17 ⋅5540353991.

It is a cyclic number.

It is not a de Polignac number, because 74871068149 - 2⁵ = 74871068117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74871068149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74871068119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107883037 + ... + 107883730.

It is an arithmetic number, because the mean of its divisors is an integer number (18771708816).

Almost surely, 2^74871068149 is an apocalyptic number.

It is an amenable number.

74871068149 is a deficient number, since it is larger than the sum of its proper divisors (215767115).

74871068149 is a wasteful number, since it uses less digits than its factorization.

74871068149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215767114.

The product of its (nonzero) digits is 2709504, while the sum is 55.

The spelling of 74871068149 in words is "seventy-four billion, eight hundred seventy-one million, sixty-eight thousand, one hundred forty-nine".