8061215550 has 192 divisors, whose sum is σ = 22238219520. Its totient is φ = 1923102720.

The previous prime is 8061215549. The next prime is 8061215563. The reversal of 8061215550 is 555121608.

It is a super-2 number, since 2×8061215550² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4953837 + ... + 4955463.

It is an arithmetic number, because the mean of its divisors is an integer number (115824060).

Almost surely, 2^8061215550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8061215550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11119109760).

8061215550 is an abundant number, since it is smaller than the sum of its proper divisors (14177003970).

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

8061215550 is a wasteful number, since it uses less digits than its factorization.

8061215550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755 (or 1750 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 33.

The square root of 8061215550 is about 89784.2722864088. The cubic root of 8061215550 is about 2005.0883392565.

The spelling of 8061215550 in words is "eight billion, sixty-one million, two hundred fifteen thousand, five hundred fifty".