245553501123451 has 4 divisors (see below), whose sum is σ = 245575306791504. Its totient is φ = 245531695455400.

The previous prime is 245553501123389. The next prime is 245553501123457. The reversal of 245553501123451 is 154321105355542.

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

It is a cyclic number.

It is not a de Polignac number, because 245553501123451 - 2⁷ = 245553501123323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245553501123457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10902817135 + ... + 10902839656.

It is an arithmetic number, because the mean of its divisors is an integer number (61393826697876).

Almost surely, 2^{245553501123451} is an apocalyptic number.

245553501123451 is a deficient number, since it is larger than the sum of its proper divisors (21805668053).

245553501123451 is a wasteful number, since it uses less digits than its factorization.

245553501123451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21805668052.

The product of its (nonzero) digits is 1800000, while the sum is 46.

Adding to 245553501123451 its reverse (154321105355542), we get a palindrome (399874606478993).

The spelling of 245553501123451 in words is "two hundred forty-five trillion, five hundred fifty-three billion, five hundred one million, one hundred twenty-three thousand, four hundred fifty-one".