20154996927 has 12 divisors (see below), whose sum is σ = 31352217624. Its totient is φ = 12403074960.

The previous prime is 20154996907. The next prime is 20154996929. The reversal of 20154996927 is 72969945102.

20154996927 is a `hidden beast` number, since 2 + 0 + 1 + 549 + 9 + 6 + 92 + 7 = 666.

It is not a de Polignac number, because 20154996927 - 2⁶ = 20154996863 is a prime.

It is a super-2 number, since 2×20154996927² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154996929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86132349 + ... + 86132582.

It is an arithmetic number, because the mean of its divisors is an integer number (2612684802).

Almost surely, 2^20154996927 is an apocalyptic number.

20154996927 is a deficient number, since it is larger than the sum of its proper divisors (11197220697).

20154996927 is a wasteful number, since it uses less digits than its factorization.

20154996927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172264950 (or 172264947 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 20154996927 in words is "twenty billion, one hundred fifty-four million, nine hundred ninety-six thousand, nine hundred twenty-seven".