20616356433 has 16 divisors (see below), whose sum is σ = 29152509120. Its totient is φ = 12914835456.

The previous prime is 20616356417. The next prime is 20616356437. The reversal of 20616356433 is 33465361602.

It is not a de Polignac number, because 20616356433 - 2⁴ = 20616356417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20616356391 and 20616356400.

It is not an unprimeable number, because it can be changed into a prime (20616356437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294960 + ... + 358097.

It is an arithmetic number, because the mean of its divisors is an integer number (1822031820).

Almost surely, 2^20616356433 is an apocalyptic number.

It is an amenable number.

20616356433 is a deficient number, since it is larger than the sum of its proper divisors (8536152687).

20616356433 is a wasteful number, since it uses less digits than its factorization.

20616356433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653696.

The product of its (nonzero) digits is 233280, while the sum is 39.

The spelling of 20616356433 in words is "twenty billion, six hundred sixteen million, three hundred fifty-six thousand, four hundred thirty-three".