245699609451 has 24 divisors (see below), whose sum is σ = 351083416944. Its totient is φ = 152800112640.

The previous prime is 245699609447. The next prime is 245699609453. The reversal of 245699609451 is 154906996542.

It is not a de Polignac number, because 245699609451 - 2² = 245699609447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245699609453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1155970 + ... + 1351911.

It is an arithmetic number, because the mean of its divisors is an integer number (14628475706).

Almost surely, 2^245699609451 is an apocalyptic number.

245699609451 is a deficient number, since it is larger than the sum of its proper divisors (105383807493).

245699609451 is a wasteful number, since it uses less digits than its factorization.

245699609451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508031 (or 2508014 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 60.

The spelling of 245699609451 in words is "two hundred forty-five billion, six hundred ninety-nine million, six hundred nine thousand, four hundred fifty-one".