5555646040 has 32 divisors (see below), whose sum is σ = 14285947680. Its totient is φ = 1904792832.

The previous prime is 5555646023. The next prime is 5555646049. The reversal of 5555646040 is 406465555.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 5555645984 and 5555646002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555646049) 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, 9920517 + ... + 9921076.

It is an arithmetic number, because the mean of its divisors is an integer number (446435865).

Almost surely, 2^5555646040 is an apocalyptic number.

It is an amenable number.

5555646040 is an abundant number, since it is smaller than the sum of its proper divisors (8730301640).

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

5555646040 is a wasteful number, since it uses less digits than its factorization.

5555646040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19841611 (or 19841607 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

The square root of 5555646040 is about 74536.2062356275. The cubic root of 5555646040 is about 1771.1072306592.

The spelling of 5555646040 in words is "five billion, five hundred fifty-five million, six hundred forty-six thousand, forty".