140505145501 has 24 divisors (see below), whose sum is σ = 166361000280. Its totient is φ = 118289808000.

The previous prime is 140505145477. The next prime is 140505145523. The reversal of 140505145501 is 105541505041.

It can be written as a sum of positive squares in 4 ways, for example, as 15577536100 + 124927609401 = 124810^2 + 353451^2 .

It is not a de Polignac number, because 140505145501 - 2⁷ = 140505145373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140505145591) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2086051 + ... + 2152351.

It is an arithmetic number, because the mean of its divisors is an integer number (6931708345).

Almost surely, 2^140505145501 is an apocalyptic number.

It is an amenable number.

140505145501 is a deficient number, since it is larger than the sum of its proper divisors (25855854779).

140505145501 is an equidigital number, since it uses as much as digits as its factorization.

140505145501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67085 (or 67078 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 140505145501 in words is "one hundred forty billion, five hundred five million, one hundred forty-five thousand, five hundred one".