20551193396 has 12 divisors (see below), whose sum is σ = 36300706848. Its totient is φ = 10179562872.

The previous prime is 20551193357. The next prime is 20551193401. The reversal of 20551193396 is 69339115502.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 24007976 + ... + 24008831.

It is an arithmetic number, because the mean of its divisors is an integer number (3025058904).

Almost surely, 2^20551193396 is an apocalyptic number.

It is an amenable number.

20551193396 is a deficient number, since it is larger than the sum of its proper divisors (15749513452).

20551193396 is a wasteful number, since it uses less digits than its factorization.

20551193396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48016918 (or 48016916 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 44.

The spelling of 20551193396 in words is "twenty billion, five hundred fifty-one million, one hundred ninety-three thousand, three hundred ninety-six".