40621566123 has 8 divisors (see below), whose sum is σ = 60180098000. Its totient is φ = 27081044064.

The previous prime is 40621566109. The next prime is 40621566143. The reversal of 40621566123 is 32166512604.

40621566123 is a `hidden beast` number, since 4 + 0 + 621 + 5 + 6 + 6 + 1 + 23 = 666.

It is not a de Polignac number, because 40621566123 - 2⁵ = 40621566091 is a prime.

It is a super-2 number, since 2×40621566123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40621566103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752251198 + ... + 752251251.

It is an arithmetic number, because the mean of its divisors is an integer number (7522512250).

Almost surely, 2^40621566123 is an apocalyptic number.

40621566123 is a deficient number, since it is larger than the sum of its proper divisors (19558531877).

40621566123 is a wasteful number, since it uses less digits than its factorization.

40621566123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504502458 (or 1504502452 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 40621566123 in words is "forty billion, six hundred twenty-one million, five hundred sixty-six thousand, one hundred twenty-three".