26978988430 has 32 divisors (see below), whose sum is σ = 49275480384. Its totient is φ = 10634190336.

The previous prime is 26978988427. The next prime is 26978988437. The reversal of 26978988430 is 3488987962.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26978988437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126487 + ... + 264493.

It is an arithmetic number, because the mean of its divisors is an integer number (1539858762).

Almost surely, 2^26978988430 is an apocalyptic number.

26978988430 is a deficient number, since it is larger than the sum of its proper divisors (22296491954).

26978988430 is a wasteful number, since it uses less digits than its factorization.

26978988430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138300.

The product of its (nonzero) digits is 41803776, while the sum is 64.

The spelling of 26978988430 in words is "twenty-six billion, nine hundred seventy-eight million, nine hundred eighty-eight thousand, four hundred thirty".