2077639816 has 64 divisors (see below), whose sum is σ = 4703760000. Its totient is φ = 840430080.

The previous prime is 2077639771. The next prime is 2077639829. The reversal of 2077639816 is 6189367702.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2077639816.

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, 295510 + ... + 302458.

It is an arithmetic number, because the mean of its divisors is an integer number (73496250).

Almost surely, 2^2077639816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2077639816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2351880000).

2077639816 is an abundant number, since it is smaller than the sum of its proper divisors (2626120184).

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

2077639816 is a wasteful number, since it uses less digits than its factorization.

2077639816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7262 (or 7258 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 2077639816 is about 45581.1344308147. The cubic root of 2077639816 is about 1276.0178602270.

The spelling of 2077639816 in words is "two billion, seventy-seven million, six hundred thirty-nine thousand, eight hundred sixteen".