78144010133 has 6 divisors (see below), whose sum is σ = 90902215926. Its totient is φ = 66980580072.

The previous prime is 78144010129. The next prime is 78144010159. The reversal of 78144010133 is 33101044187.

It can be written as a sum of positive squares in only one way, i.e., 59446729489 + 18697280644 = 243817^2 + 136738^2 .

It is not a de Polignac number, because 78144010133 - 2² = 78144010129 is a prime.

It is a super-2 number, since 2×78144010133² (a number of 23 digits) contains 22 as substring.

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 78144010133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78144010183) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 797387810 + ... + 797387907.

It is an arithmetic number, because the mean of its divisors is an integer number (15150369321).

Almost surely, 2^78144010133 is an apocalyptic number.

It is an amenable number.

78144010133 is a deficient number, since it is larger than the sum of its proper divisors (12758205793).

78144010133 is a wasteful number, since it uses less digits than its factorization.

78144010133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594775731 (or 1594775724 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 78144010133 in words is "seventy-eight billion, one hundred forty-four million, ten thousand, one hundred thirty-three".