40212352540 has 12 divisors (see below), whose sum is σ = 84445940376. Its totient is φ = 16084941008.

The previous prime is 40212352511. The next prime is 40212352541. The reversal of 40212352540 is 4525321204.

It is a junction number, because it is equal to n+sod(n) for n = 40212352499 and 40212352508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40212352541) 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, 1005308794 + ... + 1005308833.

It is an arithmetic number, because the mean of its divisors is an integer number (7037161698).

Almost surely, 2^40212352540 is an apocalyptic number.

It is an amenable number.

40212352540 is an abundant number, since it is smaller than the sum of its proper divisors (44233587836).

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

40212352540 is a wasteful number, since it uses less digits than its factorization.

40212352540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010617636 (or 2010617634 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 40212352540 its reverse (4525321204), we get a palindrome (44737673744).

The spelling of 40212352540 in words is "forty billion, two hundred twelve million, three hundred fifty-two thousand, five hundred forty".