2061078636 has 24 divisors (see below), whose sum is σ = 4939162480. Its totient is φ = 668457792.

The previous prime is 2061078631. The next prime is 2061078661. The reversal of 2061078636 is 6368701602.

It is a junction number, because it is equal to n+sod(n) for n = 2061078594 and 2061078603.

It is not an unprimeable number, because it can be changed into a prime (2061078631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2320591 + ... + 2321478.

Almost surely, 2^2061078636 is an apocalyptic number.

It is an amenable number.

2061078636 is an abundant number, since it is smaller than the sum of its proper divisors (2878083844).

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

2061078636 is a wasteful number, since it uses less digits than its factorization.

2061078636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4642113 (or 4642111 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 2061078636 is about 45399.1039118615. The cubic root of 2061078636 is about 1272.6183680031.

The spelling of 2061078636 in words is "two billion, sixty-one million, seventy-eight thousand, six hundred thirty-six".