2978126854434 has 24 divisors (see below), whose sum is σ = 6543489992832. Its totient is φ = 978727134840.

The previous prime is 2978126854433. The next prime is 2978126854453. The reversal of 2978126854434 is 4344586218792.

2978126854434 is a `hidden beast` number, since 2 + 9 + 7 + 81 + 2 + 6 + 8 + 544 + 3 + 4 = 666.

It is a super-2 number, since 2×2978126854434² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2978126854433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1165150074 + ... + 1165152629.

It is an arithmetic number, because the mean of its divisors is an integer number (272645416368).

Almost surely, 2^{2978126854434} is an apocalyptic number.

2978126854434 is an abundant number, since it is smaller than the sum of its proper divisors (3565363138398).

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

2978126854434 is a wasteful number, since it uses less digits than its factorization.

2978126854434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330302782 (or 2330302779 counting only the distinct ones).

The product of its digits is 92897280, while the sum is 63.

The spelling of 2978126854434 in words is "two trillion, nine hundred seventy-eight billion, one hundred twenty-six million, eight hundred fifty-four thousand, four hundred thirty-four".