20545122354 has 16 divisors (see below), whose sum is σ = 41865532992. Its totient is φ = 6719159408.

The previous prime is 20545122343. The next prime is 20545122371. The reversal of 20545122354 is 45322154502.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32303334 + ... + 32303969.

It is an arithmetic number, because the mean of its divisors is an integer number (2616595812).

Almost surely, 2^20545122354 is an apocalyptic number.

20545122354 is an abundant number, since it is smaller than the sum of its proper divisors (21320410638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20545122354 is a wasteful number, since it uses less digits than its factorization.

20545122354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64607361.

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 20545122354 its reverse (45322154502), we get a palindrome (65867276856).

The spelling of 20545122354 in words is "twenty billion, five hundred forty-five million, one hundred twenty-two thousand, three hundred fifty-four".