15854221423252 has 48 divisors (see below), whose sum is σ = 29045551248000. Its totient is φ = 7557756370560.

The previous prime is 15854221423223. The next prime is 15854221423297. The reversal of 15854221423252 is 25232412245851.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82710802 + ... + 82902262.

It is an arithmetic number, because the mean of its divisors is an integer number (605115651000).

Almost surely, 2^{15854221423252} is an apocalyptic number.

It is an amenable number.

15854221423252 is a deficient number, since it is larger than the sum of its proper divisors (13191329824748).

15854221423252 is a wasteful number, since it uses less digits than its factorization.

15854221423252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194416 (or 194414 counting only the distinct ones).

The product of its digits is 1536000, while the sum is 46.

The spelling of 15854221423252 in words is "fifteen trillion, eight hundred fifty-four billion, two hundred twenty-one million, four hundred twenty-three thousand, two hundred fifty-two".