20677744342 has 8 divisors (see below), whose sum is σ = 31323712032. Its totient is φ = 10236507000.

The previous prime is 20677744331. The next prime is 20677744363. The reversal of 20677744342 is 24344777602.

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

It is a super-2 number, since 2×20677744342² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20677744292 and 20677744301.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 51182334 + ... + 51182737.

It is an arithmetic number, because the mean of its divisors is an integer number (3915464004).

Almost surely, 2^20677744342 is an apocalyptic number.

20677744342 is a deficient number, since it is larger than the sum of its proper divisors (10645967690).

20677744342 is a wasteful number, since it uses less digits than its factorization.

20677744342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102365174.

The product of its (nonzero) digits is 1580544, while the sum is 46.

The spelling of 20677744342 in words is "twenty billion, six hundred seventy-seven million, seven hundred forty-four thousand, three hundred forty-two".