74653057561 has 4 divisors (see below), whose sum is σ = 74653818112. Its totient is φ = 74652297012.

The previous prime is 74653057547. The next prime is 74653057631. The reversal of 74653057561 is 16575035647.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 74653057561 - 2¹³ = 74653049369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74653057361) 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, 206601 + ... + 438166.

It is an arithmetic number, because the mean of its divisors is an integer number (18663454528).

Almost surely, 2^74653057561 is an apocalyptic number.

It is an amenable number.

74653057561 is a deficient number, since it is larger than the sum of its proper divisors (760551).

74653057561 is a wasteful number, since it uses less digits than its factorization.

74653057561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760550.

The product of its (nonzero) digits is 2646000, while the sum is 49.

The spelling of 74653057561 in words is "seventy-four billion, six hundred fifty-three million, fifty-seven thousand, five hundred sixty-one".