20854537377 has 16 divisors (see below), whose sum is σ = 28067632320. Its totient is φ = 13772673792.

The previous prime is 20854537357. The next prime is 20854537387. The reversal of 20854537377 is 77373545802.

It is not a de Polignac number, because 20854537377 - 2¹¹ = 20854535329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20854537307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135853 + ... + 245285.

It is an arithmetic number, because the mean of its divisors is an integer number (1754227020).

Almost surely, 2^20854537377 is an apocalyptic number.

It is an amenable number.

20854537377 is a deficient number, since it is larger than the sum of its proper divisors (7213094943).

20854537377 is a wasteful number, since it uses less digits than its factorization.

20854537377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110032.

The product of its (nonzero) digits is 4939200, while the sum is 51.

The spelling of 20854537377 in words is "twenty billion, eight hundred fifty-four million, five hundred thirty-seven thousand, three hundred seventy-seven".