2861722455120 has 480 divisors, whose sum is σ = 10338660783360. Its totient is φ = 727509150720.

The previous prime is 2861722455071. The next prime is 2861722455133. The reversal of 2861722455120 is 215542271682.

2861722455120 is a `hidden beast` number, since 2 + 8 + 6 + 1 + 72 + 2 + 4 + 551 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 355357014 + ... + 355365066.

It is an arithmetic number, because the mean of its divisors is an integer number (21538876632).

Almost surely, 2^{2861722455120} is an apocalyptic number.

2861722455120 is a gapful number since it is divisible by the number (20) 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 2861722455120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5169330391680).

2861722455120 is an abundant number, since it is smaller than the sum of its proper divisors (7476938328240).

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

2861722455120 is a wasteful number, since it uses less digits than its factorization.

2861722455120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8432 (or 8397 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 2861722455120 in words is "two trillion, eight hundred sixty-one billion, seven hundred twenty-two million, four hundred fifty-five thousand, one hundred twenty".