8051099280 has 160 divisors (see below), whose sum is σ = 29444210688. Its totient is φ = 1780876800.

The previous prime is 8051099279. The next prime is 8051099321. The reversal of 8051099280 is 829901508.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25216 + ... + 129375.

Almost surely, 2^8051099280 is an apocalyptic number.

8051099280 is a gapful number since it is divisible by the number (80) 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 8051099280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14722105344).

8051099280 is an abundant number, since it is smaller than the sum of its proper divisors (21393111408).

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

8051099280 is a wasteful number, since it uses less digits than its factorization.

8051099280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154645 (or 154639 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 8051099280 is about 89727.9180634433. The cubic root of 8051099280 is about 2004.2492389239.

The spelling of 8051099280 in words is "eight billion, fifty-one million, ninety-nine thousand, two hundred eighty".