40137186078838 has 32 divisors (see below), whose sum is σ = 68065868699136. Its totient is φ = 17646706670208.

The previous prime is 40137186078797. The next prime is 40137186078839. The reversal of 40137186078838 is 83887068173104.

It is a super-2 number, since 2×40137186078838² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40137186078838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40137186078839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 596784106 + ... + 596851357.

It is an arithmetic number, because the mean of its divisors is an integer number (2127058396848).

Almost surely, 2^{40137186078838} is an apocalyptic number.

40137186078838 is a deficient number, since it is larger than the sum of its proper divisors (27928682620298).

40137186078838 is a wasteful number, since it uses less digits than its factorization.

40137186078838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193635548.

The product of its (nonzero) digits is 43352064, while the sum is 64.

The spelling of 40137186078838 in words is "forty trillion, one hundred thirty-seven billion, one hundred eighty-six million, seventy-eight thousand, eight hundred thirty-eight".