20633915078 has 16 divisors (see below), whose sum is σ = 35737092384. Its totient is φ = 8751939840.

The previous prime is 20633915063. The next prime is 20633915101. The reversal of 20633915078 is 87051933602.

It is a super-2 number, since 2×20633915078² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 7595813 + ... + 7598528.

It is an arithmetic number, because the mean of its divisors is an integer number (2233568274).

Almost surely, 2^20633915078 is an apocalyptic number.

20633915078 is a deficient number, since it is larger than the sum of its proper divisors (15103177306).

20633915078 is a wasteful number, since it uses less digits than its factorization.

20633915078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15194447.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 20633915078 in words is "twenty billion, six hundred thirty-three million, nine hundred fifteen thousand, seventy-eight".