2061063440 has 40 divisors (see below), whose sum is σ = 4908857688. Its totient is φ = 804316160.

The previous prime is 2061063413. The next prime is 2061063463. The reversal of 2061063440 is 443601602.

It can be written as a sum of positive squares in 4 ways, for example, as 68690944 + 1992372496 = 8288^2 + 44636^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310907 + ... + 317466.

Almost surely, 2^2061063440 is an apocalyptic number.

2061063440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2061063440 is an abundant number, since it is smaller than the sum of its proper divisors (2847794248).

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

2061063440 is a wasteful number, since it uses less digits than its factorization.

2061063440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628427 (or 628421 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 2061063440 is about 45398.9365514216. The cubic root of 2061063440 is about 1272.6152403922.

The spelling of 2061063440 in words is "two billion, sixty-one million, sixty-three thousand, four hundred forty".