6161550000 has 120 divisors (see below), whose sum is σ = 19895882832. Its totient is φ = 1643040000.

The previous prime is 6161549981. The next prime is 6161550001. The reversal of 6161550000 is 551616.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (6161550001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129462 + ... + 170538.

Almost surely, 2^6161550000 is an apocalyptic number.

6161550000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6161550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9947941416).

6161550000 is an abundant number, since it is smaller than the sum of its proper divisors (13734332832).

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

6161550000 is an equidigital number, since it uses as much as digits as its factorization.

6161550000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41113 (or 41087 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 6161550000 is about 78495.5412746482. The cubic root of 6161550000 is about 1833.2850308670.

The spelling of 6161550000 in words is "six billion, one hundred sixty-one million, five hundred fifty thousand".