20356504132 has 12 divisors (see below), whose sum is σ = 35628848640. Its totient is φ = 10176833096.

The previous prime is 20356504127. The next prime is 20356504211. The reversal of 20356504132 is 23140565302.

It is a happy number.

It is a super-2 number, since 2×20356504132² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20356504094 and 20356504103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322132 + ... + 380107.

It is an arithmetic number, because the mean of its divisors is an integer number (2969070720).

Almost surely, 2^20356504132 is an apocalyptic number.

It is an amenable number.

20356504132 is a deficient number, since it is larger than the sum of its proper divisors (15272344508).

20356504132 is a wasteful number, since it uses less digits than its factorization.

20356504132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709490 (or 709488 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 20356504132 in words is "twenty billion, three hundred fifty-six million, five hundred four thousand, one hundred thirty-two".