40121640435 has 16 divisors (see below), whose sum is σ = 64252536480. Its totient is φ = 21378904320.

The previous prime is 40121640431. The next prime is 40121640437. The reversal of 40121640435 is 53404612104.

It is not a de Polignac number, because 40121640435 - 2² = 40121640431 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40121640431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1189306 + ... + 1222575.

It is an arithmetic number, because the mean of its divisors is an integer number (4015783530).

Almost surely, 2^40121640435 is an apocalyptic number.

40121640435 is a deficient number, since it is larger than the sum of its proper divisors (24130896045).

40121640435 is a wasteful number, since it uses less digits than its factorization.

40121640435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2412998.

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 40121640435 in words is "forty billion, one hundred twenty-one million, six hundred forty thousand, four hundred thirty-five".