40186668151 has 4 divisors (see below), whose sum is σ = 45927620752. Its totient is φ = 34445715552.

The previous prime is 40186668149. The next prime is 40186668157. The reversal of 40186668151 is 15186668104.

It is a happy number.

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 40186668151 - 2¹ = 40186668149 is a prime.

It is a super-2 number, since 2×40186668151² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40186668157) 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, 2870476290 + ... + 2870476303.

It is an arithmetic number, because the mean of its divisors is an integer number (11481905188).

Almost surely, 2^40186668151 is an apocalyptic number.

40186668151 is a deficient number, since it is larger than the sum of its proper divisors (5740952601).

40186668151 is an equidigital number, since it uses as much as digits as its factorization.

40186668151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5740952600.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 40186668151 in words is "forty billion, one hundred eighty-six million, six hundred sixty-eight thousand, one hundred fifty-one".