245120431155 has 16 divisors (see below), whose sum is σ = 395790790560. Its totient is φ = 129531529728.

The previous prime is 245120431151. The next prime is 245120431159. The reversal of 245120431155 is 551134021542.

It is an interprime number because it is at equal distance from previous prime (245120431151) and next prime (245120431159).

It is not a de Polignac number, because 245120431155 - 2² = 245120431151 is a prime.

It is a super-2 number, since 2×245120431155² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (245120431151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74958742 + ... + 74962011.

It is an arithmetic number, because the mean of its divisors is an integer number (24736924410).

Almost surely, 2^245120431155 is an apocalyptic number.

245120431155 is a deficient number, since it is larger than the sum of its proper divisors (150670359405).

245120431155 is a wasteful number, since it uses less digits than its factorization.

245120431155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149920870.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 245120431155 its reverse (551134021542), we get a palindrome (796254452697).

The spelling of 245120431155 in words is "two hundred forty-five billion, one hundred twenty million, four hundred thirty-one thousand, one hundred fifty-five".