20767820042 has 8 divisors (see below), whose sum is σ = 31546056000. Its totient is φ = 10252468044.

The previous prime is 20767820023. The next prime is 20767820053. The reversal of 20767820042 is 24002876702.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20767819978 and 20767820005.

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, 65720792 + ... + 65721107.

It is an arithmetic number, because the mean of its divisors is an integer number (3943257000).

Almost surely, 2^20767820042 is an apocalyptic number.

20767820042 is a deficient number, since it is larger than the sum of its proper divisors (10778235958).

20767820042 is a wasteful number, since it uses less digits than its factorization.

20767820042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131441980.

The product of its (nonzero) digits is 75264, while the sum is 38.

The spelling of 20767820042 in words is "twenty billion, seven hundred sixty-seven million, eight hundred twenty thousand, forty-two".