205154150545 has 16 divisors (see below), whose sum is σ = 247734897408. Its totient is φ = 163093230720.

The previous prime is 205154150503. The next prime is 205154150561. The reversal of 205154150545 is 545051451502.

It is not a de Polignac number, because 205154150545 - 2¹³ = 205154142353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316702 + ... + 714568.

It is an arithmetic number, because the mean of its divisors is an integer number (15483431088).

Almost surely, 2^205154150545 is an apocalyptic number.

It is an amenable number.

205154150545 is a deficient number, since it is larger than the sum of its proper divisors (42580746863).

205154150545 is a wasteful number, since it uses less digits than its factorization.

205154150545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398520.

The product of its (nonzero) digits is 100000, while the sum is 37.

The spelling of 205154150545 in words is "two hundred five billion, one hundred fifty-four million, one hundred fifty thousand, five hundred forty-five".