20554607247 has 8 divisors (see below), whose sum is σ = 27408099840. Its totient is φ = 13702093080.

The previous prime is 20554607219. The next prime is 20554607251. The reversal of 20554607247 is 74270645502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20554607247 - 2⁸ = 20554606991 is a prime.

It is a super-3 number, since 3×20554607247³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20554607199 and 20554607208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20554607947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194097 + ... + 280682.

It is an arithmetic number, because the mean of its divisors is an integer number (3426012480).

Almost surely, 2^20554607247 is an apocalyptic number.

20554607247 is a deficient number, since it is larger than the sum of its proper divisors (6853492593).

20554607247 is a wasteful number, since it uses less digits than its factorization.

20554607247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489213.

The product of its (nonzero) digits is 470400, while the sum is 42.

The spelling of 20554607247 in words is "twenty billion, five hundred fifty-four million, six hundred seven thousand, two hundred forty-seven".