20147821325157 has 8 divisors (see below), whose sum is σ = 27129739606560. Its totient is φ = 13298891963600.

The previous prime is 20147821325147. The next prime is 20147821325171. The reversal of 20147821325157 is 75152312874102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20147821325157 - 2¹⁰ = 20147821324133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20147821325147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33247229607 + ... + 33247230212.

It is an arithmetic number, because the mean of its divisors is an integer number (3391217450820).

Almost surely, 2^{20147821325157} is an apocalyptic number.

It is an amenable number.

20147821325157 is a deficient number, since it is larger than the sum of its proper divisors (6981918281403).

20147821325157 is a wasteful number, since it uses less digits than its factorization.

20147821325157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66494459923.

The product of its (nonzero) digits is 940800, while the sum is 48.

The spelling of 20147821325157 in words is "twenty trillion, one hundred forty-seven billion, eight hundred twenty-one million, three hundred twenty-five thousand, one hundred fifty-seven".