40254135651361 has 8 divisors (see below), whose sum is σ = 42622090725384. Its totient is φ = 37886187770880.

The previous prime is 40254135651343. The next prime is 40254135651407. The reversal of 40254135651361 is 16315653145204.

It can be written as a sum of positive squares in 4 ways, for example, as 22001212397025 + 18252923254336 = 4690545^2 + 4272344^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40254135651361 - 2²⁹ = 40253598780449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40254135658361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13385341 + ... + 16114453.

It is an arithmetic number, because the mean of its divisors is an integer number (5327761340673).

Almost surely, 2^{40254135651361} is an apocalyptic number.

It is an amenable number.

40254135651361 is a deficient number, since it is larger than the sum of its proper divisors (2367955074023).

40254135651361 is a wasteful number, since it uses less digits than its factorization.

40254135651361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3596771.

The product of its (nonzero) digits is 1296000, while the sum is 46.

Adding to 40254135651361 its reverse (16315653145204), we get a palindrome (56569788796565).

The spelling of 40254135651361 in words is "forty trillion, two hundred fifty-four billion, one hundred thirty-five million, six hundred fifty-one thousand, three hundred sixty-one".