40155471427 has 2 divisors, whose sum is σ = 40155471428. Its totient is φ = 40155471426.

The previous prime is 40155471409. The next prime is 40155471457. The reversal of 40155471427 is 72417455104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40155471427 is a prime.

It is a super-2 number, since 2×40155471427² (a number of 22 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 40155471427.

It is not a weakly prime, because it can be changed into another prime (40155471457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20077735713 + 20077735714.

It is an arithmetic number, because the mean of its divisors is an integer number (20077735714).

Almost surely, 2^40155471427 is an apocalyptic number.

40155471427 is a deficient number, since it is larger than the sum of its proper divisors (1).

40155471427 is an equidigital number, since it uses as much as digits as its factorization.

40155471427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 156800, while the sum is 40.

The spelling of 40155471427 in words is "forty billion, one hundred fifty-five million, four hundred seventy-one thousand, four hundred twenty-seven".