74712021747 has 16 divisors (see below), whose sum is σ = 111609115392. Its totient is φ = 44056228320.

The previous prime is 74712021731. The next prime is 74712021763.

74712021747 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (74712021731) and next prime (74712021763).

It is not a de Polignac number, because 74712021747 - 2⁴ = 74712021731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74712021699 and 74712021708.

It is not an unprimeable number, because it can be changed into a prime (74712021767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30593383 + ... + 30595824.

It is an arithmetic number, because the mean of its divisors is an integer number (6975569712).

Almost surely, 2^74712021747 is an apocalyptic number.

74712021747 is a deficient number, since it is larger than the sum of its proper divisors (36897093645).

74712021747 is a wasteful number, since it uses less digits than its factorization.

74712021747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61189258.

The product of its (nonzero) digits is 153664, while the sum is 42.

It can be divided in two parts, 747120 and 21747, that added together give a palindrome (768867).

The spelling of 74712021747 in words is "seventy-four billion, seven hundred twelve million, twenty-one thousand, seven hundred forty-seven".