245211240389 has 2 divisors, whose sum is σ = 245211240390. Its totient is φ = 245211240388.

The previous prime is 245211240367. The next prime is 245211240397. The reversal of 245211240389 is 983042112542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151488316225 + 93722924164 = 389215^2 + 306142^2 .

It is a cyclic number.

It is not a de Polignac number, because 245211240389 - 2¹² = 245211236293 is a prime.

It is a super-2 number, since 2×245211240389² (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 (245211240359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122605620194 + 122605620195.

It is an arithmetic number, because the mean of its divisors is an integer number (122605620195).

Almost surely, 2^245211240389 is an apocalyptic number.

It is an amenable number.

245211240389 is a deficient number, since it is larger than the sum of its proper divisors (1).

245211240389 is an equidigital number, since it uses as much as digits as its factorization.

245211240389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 245211240389 in words is "two hundred forty-five billion, two hundred eleven million, two hundred forty thousand, three hundred eighty-nine".