43625188961 has 2 divisors, whose sum is σ = 43625188962. Its totient is φ = 43625188960.

The previous prime is 43625188933. The next prime is 43625188967. The reversal of 43625188961 is 16988152634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41789580625 + 1835608336 = 204425^2 + 42844^2 .

It is a cyclic number.

It is not a de Polignac number, because 43625188961 - 2²² = 43620994657 is a prime.

It is a super-2 number, since 2×43625188961² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43625188967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21812594480 + 21812594481.

It is an arithmetic number, because the mean of its divisors is an integer number (21812594481).

Almost surely, 2^43625188961 is an apocalyptic number.

It is an amenable number.

43625188961 is a deficient number, since it is larger than the sum of its proper divisors (1).

43625188961 is an equidigital number, since it uses as much as digits as its factorization.

43625188961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 53.

The spelling of 43625188961 in words is "forty-three billion, six hundred twenty-five million, one hundred eighty-eight thousand, nine hundred sixty-one".