561154350401 has 4 divisors (see below), whose sum is σ = 563813849904. Its totient is φ = 558494850900.

The previous prime is 561154350389. The next prime is 561154350431. The reversal of 561154350401 is 104053451165.

561154350401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 561154350401 - 2³⁴ = 543974481217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561154350431) 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, 1329749435 + ... + 1329749856.

It is an arithmetic number, because the mean of its divisors is an integer number (140953462476).

Almost surely, 2^561154350401 is an apocalyptic number.

It is an amenable number.

561154350401 is a deficient number, since it is larger than the sum of its proper divisors (2659499503).

561154350401 is a wasteful number, since it uses less digits than its factorization.

561154350401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659499502.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 561154350401 in words is "five hundred sixty-one billion, one hundred fifty-four million, three hundred fifty thousand, four hundred one".