20547345246 has 16 divisors (see below), whose sum is σ = 41134952208. Its totient is φ = 6842404800.

The previous prime is 20547345229. The next prime is 20547345257. The reversal of 20547345246 is 64254374502.

It is a junction number, because it is equal to n+sod(n) for n = 20547345198 and 20547345207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1670935 + ... + 1683186.

It is an arithmetic number, because the mean of its divisors is an integer number (2570934513).

Almost surely, 2^20547345246 is an apocalyptic number.

20547345246 is an abundant number, since it is smaller than the sum of its proper divisors (20587606962).

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

20547345246 is a wasteful number, since it uses less digits than its factorization.

20547345246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3355147.

The product of its (nonzero) digits is 806400, while the sum is 42.

The spelling of 20547345246 in words is "twenty billion, five hundred forty-seven million, three hundred forty-five thousand, two hundred forty-six".