5161385655 has 48 divisors (see below), whose sum is σ = 9337700736. Its totient is φ = 2634877440.

The previous prime is 5161385651. The next prime is 5161385687. The reversal of 5161385655 is 5565831615.

5161385655 is a `hidden beast` number, since 51 + 6 + 1 + 38 + 565 + 5 = 666.

It is not a de Polignac number, because 5161385655 - 2² = 5161385651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 5161385655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5161385651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71394 + ... + 124176.

It is an arithmetic number, because the mean of its divisors is an integer number (194535432).

Almost surely, 2^5161385655 is an apocalyptic number.

5161385655 is a deficient number, since it is larger than the sum of its proper divisors (4176315081).

5161385655 is a wasteful number, since it uses less digits than its factorization.

5161385655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52888 (or 52885 counting only the distinct ones).

The product of its digits is 540000, while the sum is 45.

The square root of 5161385655 is about 71842.7842932051. The cubic root of 5161385655 is about 1728.1791856608.

The spelling of 5161385655 in words is "five billion, one hundred sixty-one million, three hundred eighty-five thousand, six hundred fifty-five".