40137218513780 has 12 divisors (see below), whose sum is σ = 84288158878980. Its totient is φ = 16054887405504.

The previous prime is 40137218513761. The next prime is 40137218513809. The reversal of 40137218513780 is 8731581273104.

It can be written as a sum of positive squares in 2 ways, for example, as 4286200058596 + 35851018455184 = 2070314^2 + 5987572^2 .

It is a super-2 number, since 2×40137218513780² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1003430462825 + ... + 1003430462864.

It is an arithmetic number, because the mean of its divisors is an integer number (7024013239915).

Almost surely, 2^{40137218513780} is an apocalyptic number.

It is an amenable number.

40137218513780 is an abundant number, since it is smaller than the sum of its proper divisors (44150940365200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40137218513780 is a wasteful number, since it uses less digits than its factorization.

40137218513780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006860925698 (or 2006860925696 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

Adding to 40137218513780 its reverse (8731581273104), we get a palindrome (48868799786884).

The spelling of 40137218513780 in words is "forty trillion, one hundred thirty-seven billion, two hundred eighteen million, five hundred thirteen thousand, seven hundred eighty".