4961551000 has 256 divisors, whose sum is σ = 13747968000. Its totient is φ = 1641024000.

The previous prime is 4961550989. The next prime is 4961551013. The reversal of 4961551000 is 1551694.

It is a congruent number.

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, 33298926 + ... + 33299074.

It is an arithmetic number, because the mean of its divisors is an integer number (53703000).

Almost surely, 2^4961551000 is an apocalyptic number.

4961551000 is a gapful number since it is divisible by the number (40) 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 4961551000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6873984000).

4961551000 is an abundant number, since it is smaller than the sum of its proper divisors (8786417000).

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

4961551000 is a wasteful number, since it uses less digits than its factorization.

4961551000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 4961551000 is about 70438.2779460146. The cubic root of 4961551000 is about 1705.5815389701.

The spelling of 4961551000 in words is "four billion, nine hundred sixty-one million, five hundred fifty-one thousand".