40506611983 has 2 divisors, whose sum is σ = 40506611984. Its totient is φ = 40506611982.

The previous prime is 40506611867. The next prime is 40506612001. The reversal of 40506611983 is 38911660504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40506611983 - 2²⁵ = 40473057551 is a prime.

It is a super-2 number, since 2×40506611983² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40506711983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20253305991 + 20253305992.

It is an arithmetic number, because the mean of its divisors is an integer number (20253305992).

Almost surely, 2^40506611983 is an apocalyptic number.

40506611983 is a deficient number, since it is larger than the sum of its proper divisors (1).

40506611983 is an equidigital number, since it uses as much as digits as its factorization.

40506611983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 40506611983 in words is "forty billion, five hundred six million, six hundred eleven thousand, nine hundred eighty-three".