20101111011078 has 16 divisors (see below), whose sum is σ = 40317414639600. Its totient is φ = 6681171567456.

The previous prime is 20101111011077. The next prime is 20101111011143. The reversal of 20101111011078 is 87011011110102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101111011077) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 4799690125 + ... + 4799694312.

It is an arithmetic number, because the mean of its divisors is an integer number (2519838414975).

Almost surely, 2^{20101111011078} is an apocalyptic number.

20101111011078 is an abundant number, since it is smaller than the sum of its proper divisors (20216303628522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20101111011078 is a wasteful number, since it uses less digits than its factorization.

20101111011078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9599384791.

The product of its (nonzero) digits is 112, while the sum is 24.

The spelling of 20101111011078 in words is "twenty trillion, one hundred one billion, one hundred eleven million, eleven thousand, seventy-eight".