6161565501 has 24 divisors (see below), whose sum is σ = 10953895680. Its totient is φ = 3250056096.

The previous prime is 6161565479. The next prime is 6161565517. The reversal of 6161565501 is 1055651616.

It is not a de Polignac number, because 6161565501 - 2⁵ = 6161565469 is a prime.

It is a super-2 number, since 2×6161565501² = 75929778846226762002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6161565541) 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 23 ways as a sum of consecutive naturals, for example, 3760821 + ... + 3762458.

It is an arithmetic number, because the mean of its divisors is an integer number (456412320).

Almost surely, 2^6161565501 is an apocalyptic number.

It is an amenable number.

6161565501 is a deficient number, since it is larger than the sum of its proper divisors (4792330179).

6161565501 is a wasteful number, since it uses less digits than its factorization.

6161565501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7523305 (or 7523302 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 6161565501 is about 78495.6400126784. The cubic root of 6161565501 is about 1833.2865682359.

The spelling of 6161565501 in words is "six billion, one hundred sixty-one million, five hundred sixty-five thousand, five hundred one".