1655140011 has 8 divisors (see below), whose sum is σ = 2522118144. Its totient is φ = 945794280.

The previous prime is 1655139991. The next prime is 1655140033. The reversal of 1655140011 is 1100415561.

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

It is not a de Polignac number, because 1655140011 - 2⁷ = 1655139883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1655140411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39408075 + ... + 39408116.

It is an arithmetic number, because the mean of its divisors is an integer number (315264768).

Almost surely, 2^1655140011 is an apocalyptic number.

1655140011 is a deficient number, since it is larger than the sum of its proper divisors (866978133).

1655140011 is an equidigital number, since it uses as much as digits as its factorization.

1655140011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78816201.

The product of its (nonzero) digits is 600, while the sum is 24.

The square root of 1655140011 is about 40683.4119881801. The cubic root of 1655140011 is about 1182.8915037857.

Adding to 1655140011 its reverse (1100415561), we get a palindrome (2755555572).

The spelling of 1655140011 in words is "one billion, six hundred fifty-five million, one hundred forty thousand, eleven".