20103999976 has 8 divisors (see below), whose sum is σ = 37694999970. Its totient is φ = 10051999984.

The previous prime is 20103999973. The next prime is 20103999989. The reversal of 20103999976 is 67999930102.

It can be written as a sum of positive squares in only one way, i.e., 18475877476 + 1628122500 = 135926^2 + 40350^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (20103999973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256499991 + ... + 1256500006.

Almost surely, 2^20103999976 is an apocalyptic number.

It is an amenable number.

20103999976 is a deficient number, since it is larger than the sum of its proper divisors (17590999994).

20103999976 is a wasteful number, since it uses less digits than its factorization.

20103999976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513000003 (or 2512999999 counting only the distinct ones).

The product of its (nonzero) digits is 1653372, while the sum is 55.

The spelling of 20103999976 in words is "twenty billion, one hundred three million, nine hundred ninety-nine thousand, nine hundred seventy-six".