40244156123 has 2 divisors, whose sum is σ = 40244156124. Its totient is φ = 40244156122.

The previous prime is 40244156111. The next prime is 40244156129. The reversal of 40244156123 is 32165144204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40244156123 - 2¹² = 40244152027 is a prime.

It is a super-2 number, since 2×40244156123² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40244156123.

It is not a weakly prime, because it can be changed into another prime (40244156129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20122078061 + 20122078062.

It is an arithmetic number, because the mean of its divisors is an integer number (20122078062).

Almost surely, 2^40244156123 is an apocalyptic number.

40244156123 is a deficient number, since it is larger than the sum of its proper divisors (1).

40244156123 is an equidigital number, since it uses as much as digits as its factorization.

40244156123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 40244156123 in words is "forty billion, two hundred forty-four million, one hundred fifty-six thousand, one hundred twenty-three".