2780490550880 has 144 divisors (see below), whose sum is σ = 7720163117856. Its totient is φ = 943482839040.

The previous prime is 2780490550861. The next prime is 2780490550889. The reversal of 2780490550880 is 880550940872.

It is a happy number.

It is a super-2 number, since 2×2780490550880² (a number of 26 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780490550889) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1067636 + ... + 2588595.

It is an arithmetic number, because the mean of its divisors is an integer number (53612243874).

Almost surely, 2^{2780490550880} is an apocalyptic number.

2780490550880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2780490550880 is an abundant number, since it is smaller than the sum of its proper divisors (4939672566976).

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

2780490550880 is a wasteful number, since it uses less digits than its factorization.

2780490550880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3656357 (or 3656342 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 56.

The spelling of 2780490550880 in words is "two trillion, seven hundred eighty billion, four hundred ninety million, five hundred fifty thousand, eight hundred eighty".