40136698447 has 4 divisors (see below), whose sum is σ = 42249156280. Its totient is φ = 38024240616.

The previous prime is 40136698439. The next prime is 40136698453. The reversal of 40136698447 is 74489663104.

40136698447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40136698447 - 2³ = 40136698439 is a prime.

It is a super-2 number, since 2×40136698447² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40136698394 and 40136698403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40136698457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056228888 + ... + 1056228925.

It is an arithmetic number, because the mean of its divisors is an integer number (10562289070).

Almost surely, 2^40136698447 is an apocalyptic number.

40136698447 is a deficient number, since it is larger than the sum of its proper divisors (2112457833).

40136698447 is a wasteful number, since it uses less digits than its factorization.

40136698447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112457832.

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 40136698447 in words is "forty billion, one hundred thirty-six million, six hundred ninety-eight thousand, four hundred forty-seven".