20040164365 has 32 divisors (see below), whose sum is σ = 26756352000. Its totient is φ = 14309256960.

The previous prime is 20040164351. The next prime is 20040164411. The reversal of 20040164365 is 56346104002.

It is not a de Polignac number, because 20040164365 - 2³¹ = 17892680717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2815431 + ... + 2822539.

It is an arithmetic number, because the mean of its divisors is an integer number (836136000).

Almost surely, 2^20040164365 is an apocalyptic number.

It is an amenable number.

20040164365 is a deficient number, since it is larger than the sum of its proper divisors (6716187635).

20040164365 is a wasteful number, since it uses less digits than its factorization.

20040164365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8557.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 20040164365 its reverse (56346104002), we get a palindrome (76386268367).

The spelling of 20040164365 in words is "twenty billion, forty million, one hundred sixty-four thousand, three hundred sixty-five".