20154313015 has 8 divisors (see below), whose sum is σ = 24262943328. Its totient is φ = 16071605280.

The previous prime is 20154313009. The next prime is 20154313027. The reversal of 20154313015 is 51031345102.

It is a happy number.

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

It is not a de Polignac number, because 20154313015 - 2³ = 20154313007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6478932 + ... + 6482041.

It is an arithmetic number, because the mean of its divisors is an integer number (3032867916).

Almost surely, 2^20154313015 is an apocalyptic number.

20154313015 is a deficient number, since it is larger than the sum of its proper divisors (4108630313).

20154313015 is a wasteful number, since it uses less digits than its factorization.

20154313015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12961289.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 20154313015 its reverse (51031345102), we get a palindrome (71185658117).

The spelling of 20154313015 in words is "twenty billion, one hundred fifty-four million, three hundred thirteen thousand, fifteen".