5181421707 has 36 divisors (see below), whose sum is σ = 9401748720. Its totient is φ = 2691643680.

The previous prime is 5181421681. The next prime is 5181421709. The reversal of 5181421707 is 7071241815.

It is not a de Polignac number, because 5181421707 - 2⁶ = 5181421643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5181421709) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 332232 + ... + 347477.

Almost surely, 2^5181421707 is an apocalyptic number.

5181421707 is a deficient number, since it is larger than the sum of its proper divisors (4220327013).

5181421707 is a wasteful number, since it uses less digits than its factorization.

5181421707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679744 (or 679730 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

The square root of 5181421707 is about 71982.0929606802. The cubic root of 5181421707 is about 1730.4125122530.

The spelling of 5181421707 in words is "five billion, one hundred eighty-one million, four hundred twenty-one thousand, seven hundred seven".