4751156421 has 48 divisors (see below), whose sum is σ = 7712565120. Its totient is φ = 2793087360.

The previous prime is 4751156411. The next prime is 4751156489. The reversal of 4751156421 is 1246511574.

4751156421 is a `hidden beast` number, since 4 + 7 + 5 + 1 + 1 + 5 + 642 + 1 = 666.

It is not a de Polignac number, because 4751156421 - 2⁹ = 4751155909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4751156401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1313211 + ... + 1316823.

It is an arithmetic number, because the mean of its divisors is an integer number (160678440).

Almost surely, 2^4751156421 is an apocalyptic number.

It is an amenable number.

4751156421 is a deficient number, since it is larger than the sum of its proper divisors (2961408699).

4751156421 is a wasteful number, since it uses less digits than its factorization.

4751156421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4026 (or 4023 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 4751156421 is about 68928.6328095952. The cubic root of 4751156421 is about 1681.1241084344.

Adding to 4751156421 its reverse (1246511574), we get a palindrome (5997667995).

The spelling of 4751156421 in words is "four billion, seven hundred fifty-one million, one hundred fifty-six thousand, four hundred twenty-one".