40121153215 has 32 divisors (see below), whose sum is σ = 57359135232. Its totient is φ = 26555088000.

The previous prime is 40121153201. The next prime is 40121153249. The reversal of 40121153215 is 51235112104.

It is not a de Polignac number, because 40121153215 - 2⁵ = 40121153183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40121153215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344401 + ... + 445930.

It is an arithmetic number, because the mean of its divisors is an integer number (1792472976).

Almost surely, 2^40121153215 is an apocalyptic number.

40121153215 is a deficient number, since it is larger than the sum of its proper divisors (17237982017).

40121153215 is a wasteful number, since it uses less digits than its factorization.

40121153215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790431.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 40121153215 its reverse (51235112104), we get a palindrome (91356265319).

The spelling of 40121153215 in words is "forty billion, one hundred twenty-one million, one hundred fifty-three thousand, two hundred fifteen".