7621540368 has 180 divisors, whose sum is σ = 22654875888. Its totient is φ = 2206464000.

The previous prime is 7621540313. The next prime is 7621540391. The reversal of 7621540368 is 8630451267.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2342743 + ... + 2345993.

Almost surely, 2^7621540368 is an apocalyptic number.

7621540368 is a gapful number since it is divisible by the number (78) 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 7621540368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11327437944).

7621540368 is an abundant number, since it is smaller than the sum of its proper divisors (15033335520).

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

7621540368 is a wasteful number, since it uses less digits than its factorization.

7621540368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3322 (or 3286 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 7621540368 is about 87301.4339401135. The cubic root of 7621540368 is about 1967.9508671388.

The spelling of 7621540368 in words is "seven billion, six hundred twenty-one million, five hundred forty thousand, three hundred sixty-eight".