12554501505 has 128 divisors (see below), whose sum is σ = 25701580800. Its totient is φ = 5089803264.

The previous prime is 12554501471. The next prime is 12554501507. The reversal of 12554501505 is 50510545521.

It is not a de Polignac number, because 12554501505 - 2⁶ = 12554501441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12554501507) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9460152 + ... + 9461478.

It is an arithmetic number, because the mean of its divisors is an integer number (200793600).

Almost surely, 2^12554501505 is an apocalyptic number.

12554501505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12554501505 is an abundant number, since it is smaller than the sum of its proper divisors (13147079295).

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

12554501505 is a wasteful number, since it uses less digits than its factorization.

12554501505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623.

The product of its (nonzero) digits is 25000, while the sum is 33.

The spelling of 12554501505 in words is "twelve billion, five hundred fifty-four million, five hundred one thousand, five hundred five".