5642351871 has 16 divisors (see below), whose sum is σ = 8119592544. Its totient is φ = 3464607744.

The previous prime is 5642351849. The next prime is 5642351887. The reversal of 5642351871 is 1781532465.

It is a happy number.

It is not a de Polignac number, because 5642351871 - 2⁶ = 5642351807 is a prime.

It is a super-2 number, since 2×5642351871² = 63672269272354401282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5642351171) 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, 140466 + ... + 176111.

It is an arithmetic number, because the mean of its divisors is an integer number (507474534).

Almost surely, 2^5642351871 is an apocalyptic number.

5642351871 is a deficient number, since it is larger than the sum of its proper divisors (2477240673).

5642351871 is a wasteful number, since it uses less digits than its factorization.

5642351871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317050.

The product of its digits is 201600, while the sum is 42.

The square root of 5642351871 is about 75115.5900662439. The cubic root of 5642351871 is about 1780.2734788955.

The spelling of 5642351871 in words is "five billion, six hundred forty-two million, three hundred fifty-one thousand, eight hundred seventy-one".