20954549396 has 24 divisors (see below), whose sum is σ = 40033647360. Its totient is φ = 9517769600.

The previous prime is 20954549393. The next prime is 20954549431. The reversal of 20954549396 is 69394545902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20954549393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115076 + ... + 234843.

It is an arithmetic number, because the mean of its divisors is an integer number (1668068640).

Almost surely, 2^20954549396 is an apocalyptic number.

It is an amenable number.

20954549396 is a deficient number, since it is larger than the sum of its proper divisors (19079097964).

20954549396 is a wasteful number, since it uses less digits than its factorization.

20954549396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351295 (or 351293 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 56.

The spelling of 20954549396 in words is "twenty billion, nine hundred fifty-four million, five hundred forty-nine thousand, three hundred ninety-six".