74436661497 has 8 divisors (see below), whose sum is σ = 108271507680. Its totient is φ = 45113128160.

The previous prime is 74436661477. The next prime is 74436661543. The reversal of 74436661497 is 79416663447.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74436661497 - 2⁶ = 74436661433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74436661447) 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 7 ways as a sum of consecutive naturals, for example, 1127828172 + ... + 1127828237.

It is an arithmetic number, because the mean of its divisors is an integer number (13533938460).

Almost surely, 2^74436661497 is an apocalyptic number.

It is an amenable number.

74436661497 is a deficient number, since it is larger than the sum of its proper divisors (33834846183).

74436661497 is a wasteful number, since it uses less digits than its factorization.

74436661497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255656423.

The product of its digits is 18289152, while the sum is 57.

The spelling of 74436661497 in words is "seventy-four billion, four hundred thirty-six million, six hundred sixty-one thousand, four hundred ninety-seven".