245155523551 has 4 divisors (see below), whose sum is σ = 246109436352. Its totient is φ = 244201610752.

The previous prime is 245155523527. The next prime is 245155523573. The reversal of 245155523551 is 155325551542.

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 245155523551 - 2¹⁹ = 245154999263 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245155523498 and 245155523507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245155520551) 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, 476956015 + ... + 476956528.

It is an arithmetic number, because the mean of its divisors is an integer number (61527359088).

Almost surely, 2^245155523551 is an apocalyptic number.

245155523551 is a deficient number, since it is larger than the sum of its proper divisors (953912801).

245155523551 is an equidigital number, since it uses as much as digits as its factorization.

245155523551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953912800.

The product of its digits is 750000, while the sum is 43.

The spelling of 245155523551 in words is "two hundred forty-five billion, one hundred fifty-five million, five hundred twenty-three thousand, five hundred fifty-one".