20554677111 has 8 divisors (see below), whose sum is σ = 27408616960. Its totient is φ = 13701927672.

The previous prime is 20554677079. The next prime is 20554677119. The reversal of 20554677111 is 11177645502.

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

It is not a de Polignac number, because 20554677111 - 2⁵ = 20554677079 is a prime.

It is a super-2 number, since 2×20554677111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20554677111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20554677119) 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, 256501 + ... + 326958.

It is an arithmetic number, because the mean of its divisors is an integer number (3426077120).

Almost surely, 2^20554677111 is an apocalyptic number.

20554677111 is a deficient number, since it is larger than the sum of its proper divisors (6853939849).

20554677111 is a wasteful number, since it uses less digits than its factorization.

20554677111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595205.

The product of its (nonzero) digits is 58800, while the sum is 39.

The spelling of 20554677111 in words is "twenty billion, five hundred fifty-four million, six hundred seventy-seven thousand, one hundred eleven".