2782877328040 has 16 divisors (see below), whose sum is σ = 6261473988180. Its totient is φ = 1113150931200.

The previous prime is 2782877327987. The next prime is 2782877328043. The reversal of 2782877328040 is 408237782872.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2711640650436 + 71236677604 = 1646706^2 + 266902^2 .

It is not an unprimeable number, because it can be changed into a prime (2782877328043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34785966561 + ... + 34785966640.

Almost surely, 2^{2782877328040} is an apocalyptic number.

2782877328040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2782877328040 is an abundant number, since it is smaller than the sum of its proper divisors (3478596660140).

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

2782877328040 is a wasteful number, since it uses less digits than its factorization.

2782877328040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69571933212 (or 69571933208 counting only the distinct ones).

The product of its (nonzero) digits is 16859136, while the sum is 58.

The spelling of 2782877328040 in words is "two trillion, seven hundred eighty-two billion, eight hundred seventy-seven million, three hundred twenty-eight thousand, forty".