53661404253401 has 12 divisors (see below), whose sum is σ = 62422998659748. Its totient is φ = 45995084970912.

The previous prime is 53661404253383. The next prime is 53661404253487. The reversal of 53661404253401 is 10435240416635.

It can be written as a sum of positive squares in 2 ways, for example, as 34469110681600 + 19192293571801 = 5871040^2 + 4380901^2 .

It is not a de Polignac number, because 53661404253401 - 2³⁸ = 53386526346457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53661404253101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 884135 + ... + 10397331.

It is an arithmetic number, because the mean of its divisors is an integer number (5201916554979).

Almost surely, 2^{53661404253401} is an apocalyptic number.

It is an amenable number.

53661404253401 is a deficient number, since it is larger than the sum of its proper divisors (8761594406347).

53661404253401 is a wasteful number, since it uses less digits than its factorization.

53661404253401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9628328 (or 9628321 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 53661404253401 in words is "fifty-three trillion, six hundred sixty-one billion, four hundred four million, two hundred fifty-three thousand, four hundred one".