74991443021141 has 4 divisors (see below), whose sum is σ = 74991720717984. Its totient is φ = 74991165324300.

The previous prime is 74991443021113. The next prime is 74991443021153. The reversal of 74991443021141 is 14112034419947.

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.

It is a cyclic number.

It is not a de Polignac number, because 74991443021141 - 2¹⁸ = 74991442758997 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 74991443021141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74991443023141) 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, 138442955 + ... + 138983576.

It is an arithmetic number, because the mean of its divisors is an integer number (18747930179496).

Almost surely, 2^{74991443021141} is an apocalyptic number.

It is an amenable number.

74991443021141 is a deficient number, since it is larger than the sum of its proper divisors (277696843).

74991443021141 is a wasteful number, since it uses less digits than its factorization.

74991443021141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277696842.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 74991443021141 in words is "seventy-four trillion, nine hundred ninety-one billion, four hundred forty-three million, twenty-one thousand, one hundred forty-one".