74787955978747 has 16 divisors (see below), whose sum is σ = 82449883653984. Its totient is φ = 67270238208000.

The previous prime is 74787955978727. The next prime is 74787955978751.

74787955978747 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74787955978747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74787955978717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5305254 + ... + 13331227.

It is an arithmetic number, because the mean of its divisors is an integer number (5153117728374).

Almost surely, 2^{74787955978747} is an apocalyptic number.

74787955978747 is a deficient number, since it is larger than the sum of its proper divisors (7661927675237).

74787955978747 is a wasteful number, since it uses less digits than its factorization.

74787955978747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18640350.

The product of its digits is 243956966400, while the sum is 94.

The spelling of 74787955978747 in words is "seventy-four trillion, seven hundred eighty-seven billion, nine hundred fifty-five million, nine hundred seventy-eight thousand, seven hundred forty-seven".