Search a number
-
+
280053102101 = 1180723719243
BaseRepresentation
bin1000001001101000111…
…01110011011000010101
3222202212101022121212212
410010310131303120111
514042022043231401
6332353221523205
726142656043143
oct4046435633025
9882771277785
10280053102101
11a8851747713
1246339273505
1320541457346
14d7a9d20593
157441431dbb
hex4134773615

280053102101 has 4 divisors (see below), whose sum is σ = 280076833152. Its totient is φ = 280029371052.

The previous prime is 280053102071. The next prime is 280053102103. The reversal of 280053102101 is 101201350082.

It is a happy number.

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 280053102101 - 226 = 279985993237 is a prime.

It is a super-2 number, since 2×2800531021012 (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280053102103) 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, 11847815 + ... + 11871428.

It is an arithmetic number, because the mean of its divisors is an integer number (70019208288).

Almost surely, 2280053102101 is an apocalyptic number.

It is an amenable number.

280053102101 is a deficient number, since it is larger than the sum of its proper divisors (23731051).

280053102101 is a wasteful number, since it uses less digits than its factorization.

280053102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23731050.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 280053102101 its reverse (101201350082), we get a palindrome (381254452183).

The spelling of 280053102101 in words is "two hundred eighty billion, fifty-three million, one hundred two thousand, one hundred one".

Divisors: 1 11807 23719243 280053102101