2061487780 has 48 divisors (see below), whose sum is σ = 4725927360. Its totient is φ = 749116800.

The previous prime is 2061487777. The next prime is 2061487829. The reversal of 2061487780 is 877841602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486511 + ... + 490729.

It is an arithmetic number, because the mean of its divisors is an integer number (98456820).

Almost surely, 2^2061487780 is an apocalyptic number.

2061487780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2061487780 is an abundant number, since it is smaller than the sum of its proper divisors (2664439580).

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

2061487780 is a wasteful number, since it uses less digits than its factorization.

2061487780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6460 (or 6458 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 2061487780 is about 45403.6097683874. The cubic root of 2061487780 is about 1272.7025714408.

The spelling of 2061487780 in words is "two billion, sixty-one million, four hundred eighty-seven thousand, seven hundred eighty".