3480678142778 has 16 divisors (see below), whose sum is σ = 5495896167840. Its totient is φ = 1648715706000.

The previous prime is 3480678142771. The next prime is 3480678142817. The reversal of 3480678142778 is 8772418760843.

It is a super-2 number, since 2×3480678142778² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3480678142771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1760573 + ... + 3171903.

It is an arithmetic number, because the mean of its divisors is an integer number (343493510490).

Almost surely, 2^{3480678142778} is an apocalyptic number.

3480678142778 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3480678142778 is a deficient number, since it is larger than the sum of its proper divisors (2015218025062).

3480678142778 is a wasteful number, since it uses less digits than its factorization.

3480678142778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476253.

The product of its (nonzero) digits is 101154816, while the sum is 65.

The spelling of 3480678142778 in words is "three trillion, four hundred eighty billion, six hundred seventy-eight million, one hundred forty-two thousand, seven hundred seventy-eight".