2978989869267 has 48 divisors (see below), whose sum is σ = 4581719670528. Its totient is φ = 1933184867040.

The previous prime is 2978989869263. The next prime is 2978989869277. The reversal of 2978989869267 is 7629689898792.

It is a happy number.

2978989869267 is a `hidden beast` number, since 297 + 8 + 98 + 98 + 6 + 92 + 67 = 666.

It is not a de Polignac number, because 2978989869267 - 2² = 2978989869263 is a prime.

It is a super-2 number, since 2×2978989869267² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2978989869263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2575042 + ... + 3548072.

It is an arithmetic number, because the mean of its divisors is an integer number (95452493136).

Almost surely, 2^{2978989869267} is an apocalyptic number.

2978989869267 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2978989869267 is a deficient number, since it is larger than the sum of its proper divisors (1602729801261).

2978989869267 is an equidigital number, since it uses as much as digits as its factorization.

2978989869267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973382 (or 973370 counting only the distinct ones).

The product of its digits is 23702740992, while the sum is 90.

The spelling of 2978989869267 in words is "two trillion, nine hundred seventy-eight billion, nine hundred eighty-nine million, eight hundred sixty-nine thousand, two hundred sixty-seven".