5161505620 has 12 divisors (see below), whose sum is σ = 10839161844. Its totient is φ = 2064602240.

The previous prime is 5161505617. The next prime is 5161505639. The reversal of 5161505620 is 265051615.

It can be written as a sum of positive squares in 2 ways, for example, as 3618744336 + 1542761284 = 60156^2 + 39278^2 .

It is a super-2 number, since 2×5161505620² = 53282280530583168800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129037621 + ... + 129037660.

It is an arithmetic number, because the mean of its divisors is an integer number (903263487).

Almost surely, 2^5161505620 is an apocalyptic number.

It is an amenable number.

5161505620 is an abundant number, since it is smaller than the sum of its proper divisors (5677656224).

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

5161505620 is a wasteful number, since it uses less digits than its factorization.

5161505620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258075290 (or 258075288 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 5161505620 is about 71843.6192017078. The cubic root of 5161505620 is about 1728.1925747921.

The spelling of 5161505620 in words is "five billion, one hundred sixty-one million, five hundred five thousand, six hundred twenty".