10400543501 has 4 divisors (see below), whose sum is σ = 10401227100. Its totient is φ = 10399859904.

The previous prime is 10400543497. The next prime is 10400543519. The reversal of 10400543501 is 10534500401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1991836900 + 8408706601 = 44630^2 + 91699^2 .

It is a cyclic number.

It is not a de Polignac number, because 10400543501 - 2² = 10400543497 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 (10400543591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318446 + ... + 349583.

It is an arithmetic number, because the mean of its divisors is an integer number (2600306775).

Almost surely, 2^10400543501 is an apocalyptic number.

It is an amenable number.

10400543501 is a deficient number, since it is larger than the sum of its proper divisors (683599).

10400543501 is an equidigital number, since it uses as much as digits as its factorization.

10400543501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683598.

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 10400543501 in words is "ten billion, four hundred million, five hundred forty-three thousand, five hundred one".