20154323601 has 18 divisors (see below), whose sum is σ = 30081197250. Its totient is φ = 13002783840.

The previous prime is 20154323537. The next prime is 20154323611. The reversal of 20154323601 is 10632345102.

20154323601 is a `hidden beast` number, since 2 + 0 + 1 + 54 + 3 + 2 + 3 + 601 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20114330625 + 39992976 = 141825^2 + 6324^2 .

It is not a de Polignac number, because 20154323601 - 2⁶ = 20154323537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20154323611) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1156476 + ... + 1173773.

It is an arithmetic number, because the mean of its divisors is an integer number (1671177625).

Almost surely, 2^20154323601 is an apocalyptic number.

It is an amenable number.

20154323601 is a deficient number, since it is larger than the sum of its proper divisors (9926873649).

20154323601 is a wasteful number, since it uses less digits than its factorization.

20154323601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330317 (or 2330283 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 20154323601 its reverse (10632345102), we get a palindrome (30786668703).

The spelling of 20154323601 in words is "twenty billion, one hundred fifty-four million, three hundred twenty-three thousand, six hundred one".