6161399772 has 48 divisors (see below), whose sum is σ = 15787478784. Its totient is φ = 1854720000.

The previous prime is 6161399771. The next prime is 6161399789. The reversal of 6161399772 is 2779931616.

It is a super-3 number, since 3×6161399772³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6161399771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134629 + ... + 174492.

It is an arithmetic number, because the mean of its divisors is an integer number (328905808).

Almost surely, 2^6161399772 is an apocalyptic number.

It is an amenable number.

6161399772 is an abundant number, since it is smaller than the sum of its proper divisors (9626079012).

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

6161399772 is a wasteful number, since it uses less digits than its factorization.

6161399772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309290 (or 309288 counting only the distinct ones).

The product of its digits is 857304, while the sum is 51.

The square root of 6161399772 is about 78494.5843482211. The cubic root of 6161399772 is about 1833.2701313162.

The spelling of 6161399772 in words is "six billion, one hundred sixty-one million, three hundred ninety-nine thousand, seven hundred seventy-two".