20347669956 has 48 divisors (see below), whose sum is σ = 48569552640. Its totient is φ = 6627091200.

The previous prime is 20347669933. The next prime is 20347669957. The reversal of 20347669956 is 65996674302.

It is a junction number, because it is equal to n+sod(n) for n = 20347669896 and 20347669905.

It is not an unprimeable number, because it can be changed into a prime (20347669957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308950 + ... + 368978.

It is an arithmetic number, because the mean of its divisors is an integer number (1011865680).

Almost surely, 2^20347669956 is an apocalyptic number.

It is an amenable number.

20347669956 is an abundant number, since it is smaller than the sum of its proper divisors (28221882684).

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

20347669956 is a wasteful number, since it uses less digits than its factorization.

20347669956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60684 (or 60682 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 57.

The spelling of 20347669956 in words is "twenty billion, three hundred forty-seven million, six hundred sixty-nine thousand, nine hundred fifty-six".