21761143041 has 16 divisors (see below), whose sum is σ = 31901810688. Its totient is φ = 13084722000.

The previous prime is 21761143039. The next prime is 21761143043. The reversal of 21761143041 is 14034116712.

It is an interprime number because it is at equal distance from previous prime (21761143039) and next prime (21761143043).

It is not a de Polignac number, because 21761143041 - 2¹ = 21761143039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21761143043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2591985 + ... + 2600366.

It is an arithmetic number, because the mean of its divisors is an integer number (1993863168).

Almost surely, 2^21761143041 is an apocalyptic number.

It is an amenable number.

21761143041 is a deficient number, since it is larger than the sum of its proper divisors (10140667647).

21761143041 is a wasteful number, since it uses less digits than its factorization.

21761143041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5192492.

The product of its (nonzero) digits is 4032, while the sum is 30.

Adding to 21761143041 its reverse (14034116712), we get a palindrome (35795259753).

The spelling of 21761143041 in words is "twenty-one billion, seven hundred sixty-one million, one hundred forty-three thousand, forty-one".