245877773965 has 4 divisors (see below), whose sum is σ = 295053328764. Its totient is φ = 196702219168.

The previous prime is 245877773951. The next prime is 245877774013. The reversal of 245877773965 is 569377778542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 195573564169 + 50304209796 = 442237^2 + 224286^2 .

It is a cyclic number.

It is not a de Polignac number, because 245877773965 - 2¹⁹ = 245877249677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245877773894 and 245877773903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24587777392 + ... + 24587777401.

It is an arithmetic number, because the mean of its divisors is an integer number (73763332191).

Almost surely, 2^245877773965 is an apocalyptic number.

It is an amenable number.

245877773965 is a deficient number, since it is larger than the sum of its proper divisors (49175554799).

245877773965 is an equidigital number, since it uses as much as digits as its factorization.

245877773965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49175554798.

The product of its digits is 622339200, while the sum is 70.

The spelling of 245877773965 in words is "two hundred forty-five billion, eight hundred seventy-seven million, seven hundred seventy-three thousand, nine hundred sixty-five".