40212115513 has 4 divisors (see below), whose sum is σ = 40213246500. Its totient is φ = 40210984528.

The previous prime is 40212115507. The next prime is 40212115553. The reversal of 40212115513 is 31551121204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26572912144 + 13639203369 = 163012^2 + 116787^2 .

It is a cyclic number.

It is not a de Polignac number, because 40212115513 - 2⁹ = 40212115001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40212115553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510370 + ... + 583867.

It is an arithmetic number, because the mean of its divisors is an integer number (10053311625).

Almost surely, 2^40212115513 is an apocalyptic number.

It is an amenable number.

40212115513 is a deficient number, since it is larger than the sum of its proper divisors (1130987).

40212115513 is a wasteful number, since it uses less digits than its factorization.

40212115513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130986.

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

Adding to 40212115513 its reverse (31551121204), we get a palindrome (71763236717).

The spelling of 40212115513 in words is "forty billion, two hundred twelve million, one hundred fifteen thousand, five hundred thirteen".