5556400840 has 32 divisors (see below), whose sum is σ = 12673167480. Its totient is φ = 2192113152.

The previous prime is 5556400777. The next prime is 5556400849. The reversal of 5556400840 is 480046555.

It can be written as a sum of positive squares in 4 ways, for example, as 4725462564 + 830938276 = 68742^2 + 28826^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5556400840.

It is not an unprimeable number, because it can be changed into a prime (5556400849) 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, 948519 + ... + 954358.

Almost surely, 2^5556400840 is an apocalyptic number.

It is an amenable number.

5556400840 is an abundant number, since it is smaller than the sum of its proper divisors (7116766640).

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

5556400840 is a wasteful number, since it uses less digits than its factorization.

5556400840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902961 (or 1902957 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The square root of 5556400840 is about 74541.2693747564. The cubic root of 5556400840 is about 1771.1874356249.

The spelling of 5556400840 in words is "five billion, five hundred fifty-six million, four hundred thousand, eight hundred forty".