40215145154 has 16 divisors (see below), whose sum is σ = 60929496000. Its totient is φ = 19905375600.

The previous prime is 40215145129. The next prime is 40215145163. The reversal of 40215145154 is 45154151204.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 40215145154.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1806737 + ... + 1828859.

It is an arithmetic number, because the mean of its divisors is an integer number (3808093500).

Almost surely, 2^40215145154 is an apocalyptic number.

40215145154 is a deficient number, since it is larger than the sum of its proper divisors (20714350846).

40215145154 is a wasteful number, since it uses less digits than its factorization.

40215145154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31225.

The product of its (nonzero) digits is 16000, while the sum is 32.

Adding to 40215145154 its reverse (45154151204), we get a palindrome (85369296358).

The spelling of 40215145154 in words is "forty billion, two hundred fifteen million, one hundred forty-five thousand, one hundred fifty-four".