22541144537 has 2 divisors, whose sum is σ = 22541144538. Its totient is φ = 22541144536.

The previous prime is 22541144491. The next prime is 22541144567. The reversal of 22541144537 is 73544114522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22540818496 + 326041 = 150136^2 + 571^2 .

It is a cyclic number.

It is not a de Polignac number, because 22541144537 - 2⁸ = 22541144281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22541144537.

It is not a weakly prime, because it can be changed into another prime (22541144567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11270572268 + 11270572269.

It is an arithmetic number, because the mean of its divisors is an integer number (11270572269).

Almost surely, 2^22541144537 is an apocalyptic number.

It is an amenable number.

22541144537 is a deficient number, since it is larger than the sum of its proper divisors (1).

22541144537 is an equidigital number, since it uses as much as digits as its factorization.

22541144537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 38.

The spelling of 22541144537 in words is "twenty-two billion, five hundred forty-one million, one hundred forty-four thousand, five hundred thirty-seven".