156116721165106 has 32 divisors (see below), whose sum is σ = 258362329273776. Its totient is φ = 70290244992000.

The previous prime is 156116721165101. The next prime is 156116721165113. The reversal of 156116721165106 is 601561127611651.

It can be written as a sum of positive squares in 8 ways, for example, as 3181674875625 + 152935046289481 = 1783725^2 + 12366691^2 .

It is a super-2 number, since 2×156116721165106² (a number of 29 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 156116721165106.

It is not an unprimeable number, because it can be changed into a prime (156116721165101) 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, 5600076 + ... + 18536296.

Almost surely, 2^{156116721165106} is an apocalyptic number.

156116721165106 is a deficient number, since it is larger than the sum of its proper divisors (102245608108670).

156116721165106 is a wasteful number, since it uses less digits than its factorization.

156116721165106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12947598.

The product of its (nonzero) digits is 453600, while the sum is 49.

Adding to 156116721165106 its reverse (601561127611651), we get a palindrome (757677848776757).

The spelling of 156116721165106 in words is "one hundred fifty-six trillion, one hundred sixteen billion, seven hundred twenty-one million, one hundred sixty-five thousand, one hundred six".