27278457305460 has 48 divisors (see below), whose sum is σ = 78843541120512. Its totient is φ = 7039601884800.

The previous prime is 27278457305459. The next prime is 27278457305467. The reversal of 27278457305460 is 6450375487272.

It is a super-2 number, since 2×27278457305460² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 27278457305394 and 27278457305403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27278457305467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7332916771 + ... + 7332920490.

It is an arithmetic number, because the mean of its divisors is an integer number (1642573773344).

Almost surely, 2^{27278457305460} is an apocalyptic number.

27278457305460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27278457305460 is an abundant number, since it is smaller than the sum of its proper divisors (51565083815052).

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

27278457305460 is a wasteful number, since it uses less digits than its factorization.

27278457305460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14665837304 (or 14665837302 counting only the distinct ones).

The product of its (nonzero) digits is 79027200, while the sum is 60.

The spelling of 27278457305460 in words is "twenty-seven trillion, two hundred seventy-eight billion, four hundred fifty-seven million, three hundred five thousand, four hundred sixty".