20255348278 has 36 divisors (see below), whose sum is σ = 35003328012. Its totient is φ = 8716937040.

The previous prime is 20255348251. The next prime is 20255348329. The reversal of 20255348278 is 87284355202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12682576 + ... + 12684172.

It is an arithmetic number, because the mean of its divisors is an integer number (972314667).

Almost surely, 2^20255348278 is an apocalyptic number.

20255348278 is a deficient number, since it is larger than the sum of its proper divisors (14747979734).

20255348278 is an equidigital number, since it uses as much as digits as its factorization.

20255348278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245 (or 1629 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 46.

The spelling of 20255348278 in words is "twenty billion, two hundred fifty-five million, three hundred forty-eight thousand, two hundred seventy-eight".