20342412521851 has 8 divisors (see below), whose sum is σ = 23876808520160. Its totient is φ = 16965100790208.

The previous prime is 20342412521831. The next prime is 20342412521861. The reversal of 20342412521851 is 15812521424302.

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 20342412521851 - 2⁵ = 20342412521819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20342412521831) 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, 39271066386 + ... + 39271066903.

It is an arithmetic number, because the mean of its divisors is an integer number (2984601065020).

Almost surely, 2^{20342412521851} is an apocalyptic number.

20342412521851 is a deficient number, since it is larger than the sum of its proper divisors (3534395998309).

20342412521851 is an equidigital number, since it uses as much as digits as its factorization.

20342412521851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78542133333.

The product of its (nonzero) digits is 153600, while the sum is 40.

The spelling of 20342412521851 in words is "twenty trillion, three hundred forty-two billion, four hundred twelve million, five hundred twenty-one thousand, eight hundred fifty-one".