20455342154 has 32 divisors (see below), whose sum is σ = 34502267520. Its totient is φ = 9030151872.

The previous prime is 20455342129. The next prime is 20455342199. The reversal of 20455342154 is 45124355402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46094 + ... + 207449.

It is an arithmetic number, because the mean of its divisors is an integer number (1078195860).

Almost surely, 2^20455342154 is an apocalyptic number.

20455342154 is a deficient number, since it is larger than the sum of its proper divisors (14046925366).

20455342154 is a wasteful number, since it uses less digits than its factorization.

20455342154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253694.

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 20455342154 its reverse (45124355402), we get a palindrome (65579697556).

The spelling of 20455342154 in words is "twenty billion, four hundred fifty-five million, three hundred forty-two thousand, one hundred fifty-four".