26984563480 has 64 divisors (see below), whose sum is σ = 69403083840. Its totient is φ = 9249956352.

The previous prime is 26984563469. The next prime is 26984563513. The reversal of 26984563480 is 8436548962.

It is a super-2 number, since 2×26984563480² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2484622 + ... + 2495458.

It is an arithmetic number, because the mean of its divisors is an integer number (1084423185).

Almost surely, 2^26984563480 is an apocalyptic number.

26984563480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26984563480 is an abundant number, since it is smaller than the sum of its proper divisors (42418520360).

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

26984563480 is a wasteful number, since it uses less digits than its factorization.

26984563480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19748 (or 19744 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 55.

The spelling of 26984563480 in words is "twenty-six billion, nine hundred eighty-four million, five hundred sixty-three thousand, four hundred eighty".