20654354152 has 8 divisors (see below), whose sum is σ = 38726914050. Its totient is φ = 10327177072.

The previous prime is 20654354137. The next prime is 20654354167. The reversal of 20654354152 is 25145345602.

It is an interprime number because it is at equal distance from previous prime (20654354137) and next prime (20654354167).

It can be written as a sum of positive squares in only one way, i.e., 19559141316 + 1095212836 = 139854^2 + 33094^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1290897127 + ... + 1290897142.

Almost surely, 2^20654354152 is an apocalyptic number.

It is an amenable number.

20654354152 is a deficient number, since it is larger than the sum of its proper divisors (18072559898).

20654354152 is a wasteful number, since it uses less digits than its factorization.

20654354152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581794275 (or 2581794271 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 20654354152 its reverse (25145345602), we get a palindrome (45799699754).

The spelling of 20654354152 in words is "twenty billion, six hundred fifty-four million, three hundred fifty-four thousand, one hundred fifty-two".