40620434256654 has 32 divisors (see below), whose sum is σ = 93327777911040. Its totient is φ = 11545704479232.

The previous prime is 40620434256599. The next prime is 40620434256659. The reversal of 40620434256654 is 45665243402604.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40620434256597 and 40620434256606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40620434256659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2505570124 + ... + 2505586335.

It is an arithmetic number, because the mean of its divisors is an integer number (2916493059720).

Almost surely, 2^{40620434256654} is an apocalyptic number.

40620434256654 is an abundant number, since it is smaller than the sum of its proper divisors (52707343654386).

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

40620434256654 is a wasteful number, since it uses less digits than its factorization.

40620434256654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5011156664.

The product of its (nonzero) digits is 16588800, while the sum is 51.

The spelling of 40620434256654 in words is "forty trillion, six hundred twenty billion, four hundred thirty-four million, two hundred fifty-six thousand, six hundred fifty-four".