26977820472 has 320 divisors, whose sum is σ = 85639831200. Its totient is φ = 7882997760.

The previous prime is 26977820431. The next prime is 26977820477. The reversal of 26977820472 is 27402877962.

It is a happy number.

26977820472 is a `hidden beast` number, since 2 + 6 + 97 + 7 + 82 + 0 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26977820477) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 12766488 + ... + 12768600.

Almost surely, 2^26977820472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26977820472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42819915600).

26977820472 is an abundant number, since it is smaller than the sum of its proper divisors (58662010728).

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

26977820472 is a wasteful number, since it uses less digits than its factorization.

26977820472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228 (or 2215 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 54.

The spelling of 26977820472 in words is "twenty-six billion, nine hundred seventy-seven million, eight hundred twenty thousand, four hundred seventy-two".