40154104521 has 12 divisors (see below), whose sum is σ = 58004578372. Its totient is φ = 26767462176.

The previous prime is 40154104511. The next prime is 40154104541. The reversal of 40154104521 is 12540145104.

It can be written as a sum of positive squares in 2 ways, for example, as 7510648896 + 32643455625 = 86664^2 + 180675^2 .

It is not a de Polignac number, because 40154104521 - 2²² = 40149910217 is a prime.

It is a super-2 number, since 2×40154104521² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40154104511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24586 + ... + 284451.

Almost surely, 2^40154104521 is an apocalyptic number.

It is an amenable number.

40154104521 is a deficient number, since it is larger than the sum of its proper divisors (17850473851).

40154104521 is a wasteful number, since it uses less digits than its factorization.

40154104521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323480 (or 323477 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 40154104521 its reverse (12540145104), we get a palindrome (52694249625).

The spelling of 40154104521 in words is "forty billion, one hundred fifty-four million, one hundred four thousand, five hundred twenty-one".