40155230387 has 2 divisors, whose sum is σ = 40155230388. Its totient is φ = 40155230386.

The previous prime is 40155230371. The next prime is 40155230407. The reversal of 40155230387 is 78303255104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40155230387 - 2⁴ = 40155230371 is a prime.

It is a super-2 number, since 2×40155230387² (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 40155230387.

It is not a weakly prime, because it can be changed into another prime (40155233387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20077615193 + 20077615194.

It is an arithmetic number, because the mean of its divisors is an integer number (20077615194).

Almost surely, 2^40155230387 is an apocalyptic number.

40155230387 is a deficient number, since it is larger than the sum of its proper divisors (1).

40155230387 is an equidigital number, since it uses as much as digits as its factorization.

40155230387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 40155230387 in words is "forty billion, one hundred fifty-five million, two hundred thirty thousand, three hundred eighty-seven".