20154253106 has 16 divisors (see below), whose sum is σ = 32677911000. Its totient is φ = 9267379968.

The previous prime is 20154253103. The next prime is 20154253121. The reversal of 20154253106 is 60135245102.

It can be written as a sum of positive squares in 4 ways, for example, as 2808046081 + 17346207025 = 52991^2 + 131705^2 .

It is not an unprimeable number, because it can be changed into a prime (20154253103) 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, 1433831 + ... + 1447818.

Almost surely, 2^20154253106 is an apocalyptic number.

20154253106 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20154253106 is a deficient number, since it is larger than the sum of its proper divisors (12523657894).

20154253106 is a wasteful number, since it uses less digits than its factorization.

20154253106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2881933.

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

Adding to 20154253106 its reverse (60135245102), we get a palindrome (80289498208).

The spelling of 20154253106 in words is "twenty billion, one hundred fifty-four million, two hundred fifty-three thousand, one hundred six".