20728790877382 has 96 divisors (see below), whose sum is σ = 39239832028320. Its totient is φ = 8155493498880.

The previous prime is 20728790877373. The next prime is 20728790877401. The reversal of 20728790877382 is 28377809782702.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 341021469 + ... + 341082247.

It is an arithmetic number, because the mean of its divisors is an integer number (408748250295).

Almost surely, 2^{20728790877382} is an apocalyptic number.

20728790877382 is a deficient number, since it is larger than the sum of its proper divisors (18511041150938).

20728790877382 is a wasteful number, since it uses less digits than its factorization.

20728790877382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65846 (or 65839 counting only the distinct ones).

The product of its (nonzero) digits is 265531392, while the sum is 70.

The spelling of 20728790877382 in words is "twenty trillion, seven hundred twenty-eight billion, seven hundred ninety million, eight hundred seventy-seven thousand, three hundred eighty-two".