12545602550 has 48 divisors (see below), whose sum is σ = 25150577760. Its totient is φ = 4628394240.

The previous prime is 12545602541. The next prime is 12545602607. The reversal of 12545602550 is 5520654521.

It is a self number, because there is not a number n which added to its sum of digits gives 12545602550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 850034 + ... + 864666.

It is an arithmetic number, because the mean of its divisors is an integer number (523970370).

Almost surely, 2^12545602550 is an apocalyptic number.

12545602550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12545602550 is an abundant number, since it is smaller than the sum of its proper divisors (12604975210).

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

12545602550 is a wasteful number, since it uses less digits than its factorization.

12545602550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15977 (or 15972 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 12545602550 in words is "twelve billion, five hundred forty-five million, six hundred two thousand, five hundred fifty".