40123262660465 has 16 divisors (see below), whose sum is σ = 48314253689856. Its totient is φ = 31987726920000.

The previous prime is 40123262660423. The next prime is 40123262660473. The reversal of 40123262660465 is 56406626232104.

It is not a de Polignac number, because 40123262660465 - 2¹² = 40123262656369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35409440 + ... + 36524990.

It is an arithmetic number, because the mean of its divisors is an integer number (3019640855616).

Almost surely, 2^{40123262660465} is an apocalyptic number.

It is an amenable number.

40123262660465 is a deficient number, since it is larger than the sum of its proper divisors (8190991029391).

40123262660465 is a wasteful number, since it uses less digits than its factorization.

40123262660465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140400.

The product of its (nonzero) digits is 2488320, while the sum is 47.

Adding to 40123262660465 its reverse (56406626232104), we get a palindrome (96529888892569).

The spelling of 40123262660465 in words is "forty trillion, one hundred twenty-three billion, two hundred sixty-two million, six hundred sixty thousand, four hundred sixty-five".