5161802851856 has 30 divisors (see below), whose sum is σ = 11633808215070. Its totient is φ = 2212201221888.

The previous prime is 5161802851813. The next prime is 5161802851879. The reversal of 5161802851856 is 6581582081615.

It can be written as a sum of positive squares in only one way, i.e., 3323110243600 + 1838692608256 = 1822940^2 + 1355984^2 .

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3291965321 + ... + 3291966888.

It is an arithmetic number, because the mean of its divisors is an integer number (387793607169).

Almost surely, 2^{5161802851856} is an apocalyptic number.

5161802851856 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

5161802851856 is an abundant number, since it is smaller than the sum of its proper divisors (6472005363214).

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

5161802851856 is a wasteful number, since it uses less digits than its factorization.

5161802851856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6583932231 (or 6583932218 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 56.

The spelling of 5161802851856 in words is "five trillion, one hundred sixty-one billion, eight hundred two million, eight hundred fifty-one thousand, eight hundred fifty-six".