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20880040141 = 22393632467
BaseRepresentation
bin10011011100100011…
…000010000011001101
31222220011110221101001
4103130203002003031
5320230242241031
613331523420301
71336266261412
oct233443020315
958804427331
1020880040141
118945269224
124068824691
131c79b0324c
141021128109
15823153861
hex4dc8c20cd

20880040141 has 4 divisors (see below), whose sum is σ = 20973672832. Its totient is φ = 20786407452.

The previous prime is 20880040121. The next prime is 20880040157. The reversal of 20880040141 is 14104008802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20880040141 - 29 = 20880039629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20880040121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46816011 + ... + 46816456.

It is an arithmetic number, because the mean of its divisors is an integer number (5243418208).

Almost surely, 220880040141 is an apocalyptic number.

It is an amenable number.

20880040141 is a deficient number, since it is larger than the sum of its proper divisors (93632691).

20880040141 is an equidigital number, since it uses as much as digits as its factorization.

20880040141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93632690.

The product of its (nonzero) digits is 2048, while the sum is 28.

Adding to 20880040141 its reverse (14104008802), we get a palindrome (34984048943).

The spelling of 20880040141 in words is "twenty billion, eight hundred eighty million, forty thousand, one hundred forty-one".

Divisors: 1 223 93632467 20880040141