20551255251315 has 8 divisors (see below), whose sum is σ = 32882008402128. Its totient is φ = 10960669467360.

The previous prime is 20551255251311. The next prime is 20551255251337. The reversal of 20551255251315 is 51315255215502.

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

It is not a de Polignac number, because 20551255251315 - 2² = 20551255251311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20551255251311) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 685041841696 + ... + 685041841725.

It is an arithmetic number, because the mean of its divisors is an integer number (4110251050266).

Almost surely, 2^{20551255251315} is an apocalyptic number.

20551255251315 is a deficient number, since it is larger than the sum of its proper divisors (12330753150813).

20551255251315 is a wasteful number, since it uses less digits than its factorization.

20551255251315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370083683429.

The product of its (nonzero) digits is 375000, while the sum is 42.

The spelling of 20551255251315 in words is "twenty trillion, five hundred fifty-one billion, two hundred fifty-five million, two hundred fifty-one thousand, three hundred fifteen".