27578278050 has 48 divisors (see below), whose sum is σ = 72417320352. Its totient is φ = 6921606400.

The previous prime is 27578278043. The next prime is 27578278109. The reversal of 27578278050 is 5087287572.

It is a super-2 number, since 2×27578278050² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 27578277984 and 27578278002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5404956 + ... + 5410055.

It is an arithmetic number, because the mean of its divisors is an integer number (1508694174).

Almost surely, 2^27578278050 is an apocalyptic number.

27578278050 is an abundant number, since it is smaller than the sum of its proper divisors (44839042302).

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

27578278050 is a wasteful number, since it uses less digits than its factorization.

27578278050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10815043 (or 10815038 counting only the distinct ones).

The product of its (nonzero) digits is 2195200, while the sum is 51.

The spelling of 27578278050 in words is "twenty-seven billion, five hundred seventy-eight million, two hundred seventy-eight thousand, fifty".