205136155514054 has 8 divisors (see below), whose sum is σ = 307825233763680. Its totient is φ = 102527744259496.

The previous prime is 205136155514039. The next prime is 205136155514071. The reversal of 205136155514054 is 450415551631502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×205136155514054² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20166742409 + ... + 20166752580.

It is an arithmetic number, because the mean of its divisors is an integer number (38478154220460).

Almost surely, 2^{205136155514054} is an apocalyptic number.

205136155514054 is a deficient number, since it is larger than the sum of its proper divisors (102689078249626).

205136155514054 is a wasteful number, since it uses less digits than its factorization.

205136155514054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40333497534.

The product of its (nonzero) digits is 1800000, while the sum is 47.

The spelling of 205136155514054 in words is "two hundred five trillion, one hundred thirty-six billion, one hundred fifty-five million, five hundred fourteen thousand, fifty-four".