659393948133541 has 4 divisors (see below), whose sum is σ = 698181827435532. Its totient is φ = 620606068831552.

The previous prime is 659393948133511. The next prime is 659393948133587. The reversal of 659393948133541 is 145331849393956.

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 419108761845316 + 240285186288225 = 20472146^2 + 15501135^2 .

It is a cyclic number.

It is not a de Polignac number, because 659393948133541 - 2¹⁵ = 659393948100773 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 (659393948133511) 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, 19393939650970 + ... + 19393939651003.

It is an arithmetic number, because the mean of its divisors is an integer number (174545456858883).

Almost surely, 2^{659393948133541} is an apocalyptic number.

It is an amenable number.

659393948133541 is a deficient number, since it is larger than the sum of its proper divisors (38787879301991).

659393948133541 is a wasteful number, since it uses less digits than its factorization.

659393948133541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38787879301990.

The product of its digits is 1133740800, while the sum is 73.

The spelling of 659393948133541 in words is "six hundred fifty-nine trillion, three hundred ninety-three billion, nine hundred forty-eight million, one hundred thirty-three thousand, five hundred forty-one".