245531137441 has 2 divisors, whose sum is σ = 245531137442. Its totient is φ = 245531137440.

The previous prime is 245531137429. The next prime is 245531137451. The reversal of 245531137441 is 144731135542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227262911841 + 18268225600 = 476721^2 + 135160^2 .

It is a cyclic number.

It is not a de Polignac number, because 245531137441 - 2⁵ = 245531137409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 245531137394 and 245531137403.

It is not a weakly prime, because it can be changed into another prime (245531137451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122765568720 + 122765568721.

It is an arithmetic number, because the mean of its divisors is an integer number (122765568721).

Almost surely, 2^245531137441 is an apocalyptic number.

It is an amenable number.

245531137441 is a deficient number, since it is larger than the sum of its proper divisors (1).

245531137441 is an equidigital number, since it uses as much as digits as its factorization.

245531137441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 40.

The spelling of 245531137441 in words is "two hundred forty-five billion, five hundred thirty-one million, one hundred thirty-seven thousand, four hundred forty-one".