20315366756 has 6 divisors (see below), whose sum is σ = 35551891830. Its totient is φ = 10157683376.

The previous prime is 20315366737. The next prime is 20315366761. The reversal of 20315366756 is 65766351302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20189568100 + 125798656 = 142090^2 + 11216^2 .

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 as a sum of consecutive naturals, namely, 2539420841 + ... + 2539420848.

It is an arithmetic number, because the mean of its divisors is an integer number (5925315305).

Almost surely, 2^20315366756 is an apocalyptic number.

It is an amenable number.

20315366756 is a deficient number, since it is larger than the sum of its proper divisors (15236525074).

20315366756 is a wasteful number, since it uses less digits than its factorization.

20315366756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5078841693 (or 5078841691 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 44.

The spelling of 20315366756 in words is "twenty billion, three hundred fifteen million, three hundred sixty-six thousand, seven hundred fifty-six".