5156111006550 has 72 divisors (see below), whose sum is σ = 15831716090736. Its totient is φ = 1178539657920.

The previous prime is 5156111006509. The next prime is 5156111006551. The reversal of 5156111006550 is 556001116515.

It is a happy number.

5156111006550 is a `hidden beast` number, since 51 + 56 + 1 + 1 + 1 + 0 + 0 + 6 + 550 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5156111006551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 818427169 + ... + 818433468.

Almost surely, 2^{5156111006550} is an apocalyptic number.

5156111006550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5156111006550 is an abundant number, since it is smaller than the sum of its proper divisors (10675605084186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5156111006550 is a wasteful number, since it uses less digits than its factorization.

5156111006550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636860662 (or 1636860654 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 5156111006550 in words is "five trillion, one hundred fifty-six billion, one hundred eleven million, six thousand, five hundred fifty".