5431556840 has 32 divisors (see below), whose sum is σ = 12243394080. Its totient is φ = 2168642112.

The previous prime is 5431556777. The next prime is 5431556849. The reversal of 5431556840 is 486551345.

It is not an unprimeable number, because it can be changed into a prime (5431556849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102242 + ... + 146001.

It is an arithmetic number, because the mean of its divisors is an integer number (382606065).

Almost surely, 2^5431556840 is an apocalyptic number.

It is an amenable number.

5431556840 is an abundant number, since it is smaller than the sum of its proper divisors (6811837240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5431556840 is a wasteful number, since it uses less digits than its factorization.

5431556840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248801 (or 248797 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 41.

The square root of 5431556840 is about 73699.0966023329. The cubic root of 5431556840 is about 1757.8215169352.

The spelling of 5431556840 in words is "five billion, four hundred thirty-one million, five hundred fifty-six thousand, eight hundred forty".