245920542239 has 12 divisors (see below), whose sum is σ = 253522378440. Its totient is φ = 238481871600.

The previous prime is 245920542209. The next prime is 245920542251. The reversal of 245920542239 is 932245029542.

It is not a de Polignac number, because 245920542239 - 2⁸ = 245920541983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245920542193 and 245920542202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245920542209) 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 11 ways as a sum of consecutive naturals, for example, 92369 + ... + 707370.

It is an arithmetic number, because the mean of its divisors is an integer number (21126864870).

Almost surely, 2^245920542239 is an apocalyptic number.

245920542239 is a deficient number, since it is larger than the sum of its proper divisors (7601836201).

245920542239 is an frugal number, since it uses more digits than its factorization.

245920542239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799942 (or 799871 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 245920542239 in words is "two hundred forty-five billion, nine hundred twenty million, five hundred forty-two thousand, two hundred thirty-nine".