6554403622620 has 72 divisors (see below), whose sum is σ = 22721932562784. Its totient is φ = 1498149399168.

The previous prime is 6554403622619. The next prime is 6554403622681. The reversal of 6554403622620 is 262263044556.

6554403622620 is a `hidden beast` number, since 6 + 5 + 544 + 0 + 3 + 62 + 26 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2600952559 + ... + 2600955078.

Almost surely, 2^{6554403622620} is an apocalyptic number.

6554403622620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6554403622620 is an abundant number, since it is smaller than the sum of its proper divisors (16167528940164).

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

6554403622620 is a wasteful number, since it uses less digits than its factorization.

6554403622620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5201907659 (or 5201907654 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 45.

The spelling of 6554403622620 in words is "six trillion, five hundred fifty-four billion, four hundred three million, six hundred twenty-two thousand, six hundred twenty".