20154210315 has 32 divisors (see below), whose sum is σ = 32815791360. Its totient is φ = 10559478144.

The previous prime is 20154210269. The next prime is 20154210317. The reversal of 20154210315 is 51301245102.

It is a happy number.

It is not a de Polignac number, because 20154210315 - 2¹⁶ = 20154144779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20154210317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1432897 + ... + 1446893.

It is an arithmetic number, because the mean of its divisors is an integer number (1025493480).

Almost surely, 2^20154210315 is an apocalyptic number.

20154210315 is a deficient number, since it is larger than the sum of its proper divisors (12661581045).

20154210315 is a wasteful number, since it uses less digits than its factorization.

20154210315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15691.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 20154210315 its reverse (51301245102), we get a palindrome (71455455417).

The spelling of 20154210315 in words is "twenty billion, one hundred fifty-four million, two hundred ten thousand, three hundred fifteen".