245154121550 has 48 divisors (see below), whose sum is σ = 512413140960. Its totient is φ = 86582855040.

The previous prime is 245154121547. The next prime is 245154121559. The reversal of 245154121550 is 55121451542.

It is a self number, because there is not a number n which added to its sum of digits gives 245154121550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245154121559) 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 23 ways as a sum of consecutive naturals, for example, 8184185 + ... + 8214084.

It is an arithmetic number, because the mean of its divisors is an integer number (10675273770).

Almost surely, 2^245154121550 is an apocalyptic number.

245154121550 is an abundant number, since it is smaller than the sum of its proper divisors (267259019410).

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

245154121550 is a wasteful number, since it uses less digits than its factorization.

245154121550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16398317 (or 16398312 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 35.

The spelling of 245154121550 in words is "two hundred forty-five billion, one hundred fifty-four million, one hundred twenty-one thousand, five hundred fifty".