74579763487 has 4 divisors (see below), whose sum is σ = 78966808416. Its totient is φ = 70192718560.

The previous prime is 74579763469. The next prime is 74579763493. The reversal of 74579763487 is 78436797547.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74579763487 is a prime.

It is a super-2 number, since 2×74579763487² (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 (74579763457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2193522439 + ... + 2193522472.

It is an arithmetic number, because the mean of its divisors is an integer number (19741702104).

Almost surely, 2^74579763487 is an apocalyptic number.

74579763487 is a deficient number, since it is larger than the sum of its proper divisors (4387044929).

74579763487 is a wasteful number, since it uses less digits than its factorization.

74579763487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4387044928.

The product of its digits is 248935680, while the sum is 67.

The spelling of 74579763487 in words is "seventy-four billion, five hundred seventy-nine million, seven hundred sixty-three thousand, four hundred eighty-seven".