2758825512978 has 8 divisors (see below), whose sum is σ = 5517651025968. Its totient is φ = 919608504324.

The previous prime is 2758825512973. The next prime is 2758825513013. The reversal of 2758825512978 is 8792155288572.

It is a sphenic number, since it is the product of 3 distinct primes.

2758825512978 is an admirable number.

It is a super-2 number, since 2×2758825512978² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2758825512973) 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, 229902126076 + ... + 229902126087.

It is an arithmetic number, because the mean of its divisors is an integer number (689706378246).

Almost surely, 2^{2758825512978} is an apocalyptic number.

2758825512978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2758825512978 is a wasteful number, since it uses less digits than its factorization.

2758825512978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459804252168.

The product of its digits is 225792000, while the sum is 69.

The spelling of 2758825512978 in words is "two trillion, seven hundred fifty-eight billion, eight hundred twenty-five million, five hundred twelve thousand, nine hundred seventy-eight".