Search a number
-
+
71293895441 = 223319703567
BaseRepresentation
bin100001001100101110…
…0101000001100010001
320211000121001010201222
41002121130220030101
52132002214123231
652430231334425
75102505053366
oct1023134501421
9224017033658
1071293895441
11282655aa94a
1211998221415
136952525b62
1436447c846d
151cc3ee727b
hex1099728311

71293895441 has 4 divisors (see below), whose sum is σ = 71613599232. Its totient is φ = 70974191652.

The previous prime is 71293895429. The next prime is 71293895473. The reversal of 71293895441 is 14459839217.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14459839217 = 138110470557.

It is a cyclic number.

It is not a de Polignac number, because 71293895441 - 214 = 71293879057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71293895411) 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, 159851561 + ... + 159852006.

It is an arithmetic number, because the mean of its divisors is an integer number (17903399808).

Almost surely, 271293895441 is an apocalyptic number.

It is an amenable number.

71293895441 is a deficient number, since it is larger than the sum of its proper divisors (319703791).

71293895441 is a wasteful number, since it uses less digits than its factorization.

71293895441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319703790.

The product of its digits is 2177280, while the sum is 53.

The spelling of 71293895441 in words is "seventy-one billion, two hundred ninety-three million, eight hundred ninety-five thousand, four hundred forty-one".

Divisors: 1 223 319703567 71293895441