40051021503 has 128 divisors (see below), whose sum is σ = 61556060160. Its totient is φ = 23063040000.

The previous prime is 40051021501. The next prime is 40051021511. The reversal of 40051021503 is 30512015004.

It is not a de Polignac number, because 40051021503 - 2¹ = 40051021501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40051021503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40051021501) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 265238478 + ... + 265238628.

It is an arithmetic number, because the mean of its divisors is an integer number (480906720).

Almost surely, 2^40051021503 is an apocalyptic number.

40051021503 is a deficient number, since it is larger than the sum of its proper divisors (21505038657).

40051021503 is a wasteful number, since it uses less digits than its factorization.

40051021503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 40051021503 its reverse (30512015004), we get a palindrome (70563036507).

The spelling of 40051021503 in words is "forty billion, fifty-one million, twenty-one thousand, five hundred three".