12908637654 has 32 divisors (see below), whose sum is σ = 28343713536. Its totient is φ = 3886789920.

The previous prime is 12908637649. The next prime is 12908637733. The reversal of 12908637654 is 45673680921.

It is a junction number, because it is equal to n+sod(n) for n = 12908637597 and 12908637606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 612522 + ... + 633245.

It is an arithmetic number, because the mean of its divisors is an integer number (885741048).

It is a 1-persistent number, because it is pandigital, but 2⋅12908637654 = 25817275308 is not.

Almost surely, 2^12908637654 is an apocalyptic number.

12908637654 is an abundant number, since it is smaller than the sum of its proper divisors (15435075882).

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

12908637654 is a wasteful number, since it uses less digits than its factorization.

12908637654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245940.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 12908637654 in words is "twelve billion, nine hundred eight million, six hundred thirty-seven thousand, six hundred fifty-four".