2504494484778 has 128 divisors (see below), whose sum is σ = 5947915567104. Its totient is φ = 693062092800.

The previous prime is 2504494484753. The next prime is 2504494484783. The reversal of 2504494484778 is 8774844944052.

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 63 ways as a sum of consecutive naturals, for example, 38432443 + ... + 38497553.

It is an arithmetic number, because the mean of its divisors is an integer number (46468090368).

Almost surely, 2^{2504494484778} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2504494484778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2973957783552).

2504494484778 is an abundant number, since it is smaller than the sum of its proper divisors (3443421082326).

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

2504494484778 is a wasteful number, since it uses less digits than its factorization.

2504494484778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65620.

The product of its (nonzero) digits is 289013760, while the sum is 66.

The spelling of 2504494484778 in words is "two trillion, five hundred four billion, four hundred ninety-four million, four hundred eighty-four thousand, seven hundred seventy-eight".