40212251653 has 24 divisors (see below), whose sum is σ = 47091655800. Its totient is φ = 34236558720.

The previous prime is 40212251647. The next prime is 40212251669. The reversal of 40212251653 is 35615221204.

It can be written as a sum of positive squares in 4 ways, for example, as 9584801604 + 30627450049 = 97902^2 + 175007^2 .

It is a de Polignac number, because none of the positive numbers 2^k-40212251653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40212251603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15774423 + ... + 15776971.

It is an arithmetic number, because the mean of its divisors is an integer number (1962152325).

Almost surely, 2^40212251653 is an apocalyptic number.

It is an amenable number.

40212251653 is a deficient number, since it is larger than the sum of its proper divisors (6879404147).

40212251653 is a wasteful number, since it uses less digits than its factorization.

40212251653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4597 (or 4590 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 40212251653 its reverse (35615221204), we get a palindrome (75827472857).

The spelling of 40212251653 in words is "forty billion, two hundred twelve million, two hundred fifty-one thousand, six hundred fifty-three".