7121613000 has 256 divisors, whose sum is σ = 22763520000. Its totient is φ = 1853280000.

The previous prime is 7121612959. The next prime is 7121613029. The reversal of 7121613000 is 3161217.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35786901 + ... + 35787099.

It is an arithmetic number, because the mean of its divisors is an integer number (88920000).

Almost surely, 2^7121613000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7121613000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11381760000).

7121613000 is an abundant number, since it is smaller than the sum of its proper divisors (15641907000).

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

7121613000 is a wasteful number, since it uses less digits than its factorization.

7121613000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 7121613000 is about 84389.6498393020. The cubic root of 7121613000 is about 1923.9456079932.

Adding to 7121613000 its reverse (3161217), we get a palindrome (7124774217).

The spelling of 7121613000 in words is "seven billion, one hundred twenty-one million, six hundred thirteen thousand".