20577316145 has 8 divisors (see below), whose sum is σ = 24693665856. Its totient is φ = 16461261936.

The previous prime is 20577316129. The next prime is 20577316163. The reversal of 20577316145 is 54161377502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20577316145 - 2⁴ = 20577316129 is a prime.

It is a super-2 number, since 2×20577316145² (a number of 21 digits) contains 22 as substring.

It is a Duffinian 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, 130964 + ... + 241466.

It is an arithmetic number, because the mean of its divisors is an integer number (3086708232).

Almost surely, 2^20577316145 is an apocalyptic number.

It is an amenable number.

20577316145 is a deficient number, since it is larger than the sum of its proper divisors (4116349711).

20577316145 is a wasteful number, since it uses less digits than its factorization.

20577316145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147751.

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 20577316145 in words is "twenty billion, five hundred seventy-seven million, three hundred sixteen thousand, one hundred forty-five".