245155505442 has 8 divisors (see below), whose sum is σ = 490311010896. Its totient is φ = 81718501812.

The previous prime is 245155505429. The next prime is 245155505443. The reversal of 245155505442 is 244505551542.

It is a sphenic number, since it is the product of 3 distinct primes.

245155505442 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 245155505394 and 245155505403.

It is not an unprimeable number, because it can be changed into a prime (245155505443) 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, 20429625448 + ... + 20429625459.

It is an arithmetic number, because the mean of its divisors is an integer number (61288876362).

Almost surely, 2^245155505442 is an apocalyptic number.

245155505442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245155505442 is a wasteful number, since it uses less digits than its factorization.

245155505442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40859250912.

The product of its (nonzero) digits is 800000, while the sum is 42.

The spelling of 245155505442 in words is "two hundred forty-five billion, one hundred fifty-five million, five hundred five thousand, four hundred forty-two".