245642246501 has 2 divisors, whose sum is σ = 245642246502. Its totient is φ = 245642246500.

The previous prime is 245642246477. The next prime is 245642246539. The reversal of 245642246501 is 105642246542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231260001025 + 14382245476 = 480895^2 + 119926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245642246501 is a prime.

It is a super-2 number, since 2×245642246501² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245642246701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122821123250 + 122821123251.

It is an arithmetic number, because the mean of its divisors is an integer number (122821123251).

Almost surely, 2^245642246501 is an apocalyptic number.

It is an amenable number.

245642246501 is a deficient number, since it is larger than the sum of its proper divisors (1).

245642246501 is an equidigital number, since it uses as much as digits as its factorization.

245642246501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 460800, while the sum is 41.

Adding to 245642246501 its sum of digits (41), we get a palindrome (245642246542).

The spelling of 245642246501 in words is "two hundred forty-five billion, six hundred forty-two million, two hundred forty-six thousand, five hundred one".