20106542315 has 4 divisors (see below), whose sum is σ = 24127850784. Its totient is φ = 16085233848.

The previous prime is 20106542279. The next prime is 20106542333. The reversal of 20106542315 is 51324560102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20106542315 - 2¹² = 20106538219 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2010654227 + ... + 2010654236.

It is an arithmetic number, because the mean of its divisors is an integer number (6031962696).

Almost surely, 2^20106542315 is an apocalyptic number.

20106542315 is a deficient number, since it is larger than the sum of its proper divisors (4021308469).

20106542315 is an equidigital number, since it uses as much as digits as its factorization.

20106542315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4021308468.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 20106542315 in words is "twenty billion, one hundred six million, five hundred forty-two thousand, three hundred fifteen".