53661336167523 has 16 divisors (see below), whose sum is σ = 85324857509376. Its totient is φ = 29330419768320.

The previous prime is 53661336167519. The next prime is 53661336167531. The reversal of 53661336167523 is 32576163316635.

It is not a de Polignac number, because 53661336167523 - 2² = 53661336167519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53661336157523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55550036958 + ... + 55550037923.

It is an arithmetic number, because the mean of its divisors is an integer number (5332803594336).

Almost surely, 2^{53661336167523} is an apocalyptic number.

53661336167523 is a deficient number, since it is larger than the sum of its proper divisors (31663521341853).

53661336167523 is a wasteful number, since it uses less digits than its factorization.

53661336167523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111100074914.

The product of its digits is 36741600, while the sum is 57.

The spelling of 53661336167523 in words is "fifty-three trillion, six hundred sixty-one billion, three hundred thirty-six million, one hundred sixty-seven thousand, five hundred twenty-three".