71623678149 has 48 divisors (see below), whose sum is σ = 114265307520. Its totient is φ = 43029740160.

The previous prime is 71623678117. The next prime is 71623678153. The reversal of 71623678149 is 94187632617.

71623678149 is a `hidden beast` number, since 7 + 1 + 623 + 6 + 7 + 8 + 1 + 4 + 9 = 666.

It is not a de Polignac number, because 71623678149 - 2⁵ = 71623678117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71623678095 and 71623678104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71623678349) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 661567 + ... + 762179.

It is an arithmetic number, because the mean of its divisors is an integer number (2380527240).

Almost surely, 2^71623678149 is an apocalyptic number.

It is an amenable number.

71623678149 is a deficient number, since it is larger than the sum of its proper divisors (42641629371).

71623678149 is a wasteful number, since it uses less digits than its factorization.

71623678149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100842 (or 100839 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The spelling of 71623678149 in words is "seventy-one billion, six hundred twenty-three million, six hundred seventy-eight thousand, one hundred forty-nine".