20787757478626 has 8 divisors (see below), whose sum is σ = 31484370550464. Its totient is φ = 10292967295140.

The previous prime is 20787757478603. The next prime is 20787757478693. The reversal of 20787757478626 is 62687475778702.

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

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, 50455721830 + ... + 50455722241.

It is an arithmetic number, because the mean of its divisors is an integer number (3935546318808).

Almost surely, 2^{20787757478626} is an apocalyptic number.

20787757478626 is a deficient number, since it is larger than the sum of its proper divisors (10696613071838).

20787757478626 is a wasteful number, since it uses less digits than its factorization.

20787757478626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100911444176.

The product of its (nonzero) digits is 3097866240, while the sum is 76.

The spelling of 20787757478626 in words is "twenty trillion, seven hundred eighty-seven billion, seven hundred fifty-seven million, four hundred seventy-eight thousand, six hundred twenty-six".