2780864478084 has 96 divisors (see below), whose sum is σ = 8090611200000. Its totient is φ = 722228924160.

The previous prime is 2780864478079. The next prime is 2780864478103. The reversal of 2780864478084 is 4808744680872.

It is a super-2 number, since 2×2780864478084² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9238792 + ... + 9535040.

It is an arithmetic number, because the mean of its divisors is an integer number (84277200000).

Almost surely, 2^{2780864478084} is an apocalyptic number.

It is an amenable number.

2780864478084 is an abundant number, since it is smaller than the sum of its proper divisors (5309746721916).

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

2780864478084 is a wasteful number, since it uses less digits than its factorization.

2780864478084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306433 (or 306431 counting only the distinct ones).

The product of its (nonzero) digits is 154140672, while the sum is 66.

The spelling of 2780864478084 in words is "two trillion, seven hundred eighty billion, eight hundred sixty-four million, four hundred seventy-eight thousand, eighty-four".