12554721871628 has 6 divisors (see below), whose sum is σ = 21970763275356. Its totient is φ = 6277360935812.

The previous prime is 12554721871547. The next prime is 12554721871639. The reversal of 12554721871628 is 82617812745521.

It is a super-2 number, since 2×12554721871628² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569340233950 + ... + 1569340233957.

It is an arithmetic number, because the mean of its divisors is an integer number (3661793879226).

Almost surely, 2^{12554721871628} is an apocalyptic number.

It is an amenable number.

12554721871628 is a deficient number, since it is larger than the sum of its proper divisors (9416041403728).

12554721871628 is a wasteful number, since it uses less digits than its factorization.

12554721871628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3138680467911 (or 3138680467909 counting only the distinct ones).

The product of its digits is 15052800, while the sum is 59.

The spelling of 12554721871628 in words is "twelve trillion, five hundred fifty-four billion, seven hundred twenty-one million, eight hundred seventy-one thousand, six hundred twenty-eight".