105156551506 has 4 divisors (see below), whose sum is σ = 157734827262. Its totient is φ = 52578275752.

The previous prime is 105156551503. The next prime is 105156551509. The reversal of 105156551506 is 605155651501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605155651501 = 67 ⋅9032173903.

It is an interprime number because it is at equal distance from previous prime (105156551503) and next prime (105156551509).

It can be written as a sum of positive squares in only one way, i.e., 68021334481 + 37135217025 = 260809^2 + 192705^2 .

It is a super-2 number, since 2×105156551506² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105156551503) 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, 26289137875 + ... + 26289137878.

Almost surely, 2^105156551506 is an apocalyptic number.

105156551506 is a deficient number, since it is larger than the sum of its proper divisors (52578275756).

105156551506 is an equidigital number, since it uses as much as digits as its factorization.

105156551506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52578275755.

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 105156551506 in words is "one hundred five billion, one hundred fifty-six million, five hundred fifty-one thousand, five hundred six".