53661336167406 has 48 divisors (see below), whose sum is σ = 124905433946832. Its totient is φ = 15304480899840.

The previous prime is 53661336167401. The next prime is 53661336167447. The reversal of 53661336167406 is 60476163316635.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53661336167401) 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, 2173919605 + ... + 2173944288.

It is an arithmetic number, because the mean of its divisors is an integer number (2602196540559).

Almost surely, 2^{53661336167406} is an apocalyptic number.

53661336167406 is an abundant number, since it is smaller than the sum of its proper divisors (71244097779426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53661336167406 is a wasteful number, since it uses less digits than its factorization.

53661336167406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4347863937 (or 4347863926 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 57.

The spelling of 53661336167406 in words is "fifty-three trillion, six hundred sixty-one billion, three hundred thirty-six million, one hundred sixty-seven thousand, four hundred six".