20468654979 has 8 divisors (see below), whose sum is σ = 27304476672. Its totient is φ = 13639301640.

The previous prime is 20468654903. The next prime is 20468655001. The reversal of 20468654979 is 97945686402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20468654979 - 2⁹ = 20468654467 is a prime.

It is a super-3 number, since 3×20468654979³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20468654779) 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, 1609699 + ... + 1622364.

It is an arithmetic number, because the mean of its divisors is an integer number (3413059584).

Almost surely, 2^20468654979 is an apocalyptic number.

20468654979 is a deficient number, since it is larger than the sum of its proper divisors (6835821693).

20468654979 is a wasteful number, since it uses less digits than its factorization.

20468654979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3234177.

The product of its (nonzero) digits is 26127360, while the sum is 60.

The spelling of 20468654979 in words is "twenty billion, four hundred sixty-eight million, six hundred fifty-four thousand, nine hundred seventy-nine".