78901001101 has 24 divisors (see below), whose sum is σ = 87716044584. Its totient is φ = 70896983040.

The previous prime is 78901001087. The next prime is 78901001117. The reversal of 78901001101 is 10110010987.

It can be written as a sum of positive squares in 12 ways, for example, as 37752878601 + 41148122500 = 194301^2 + 202850^2 .

It is not a de Polignac number, because 78901001101 - 2³³ = 70311066509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78901001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78901001141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3154095 + ... + 3179011.

It is an arithmetic number, because the mean of its divisors is an integer number (3654835191).

Almost surely, 2^78901001101 is an apocalyptic number.

It is an amenable number.

78901001101 is a deficient number, since it is larger than the sum of its proper divisors (8815043483).

78901001101 is a wasteful number, since it uses less digits than its factorization.

78901001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25441 (or 25428 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 28.

The spelling of 78901001101 in words is "seventy-eight billion, nine hundred one million, one thousand, one hundred one".