206154641151045 has 48 divisors (see below), whose sum is σ = 359120898968832. Its totient is φ = 109400118030720.

The previous prime is 206154641150999. The next prime is 206154641151059. The reversal of 206154641151045 is 540151146451602.

It is a happy number.

206154641151045 is a `hidden beast` number, since 2 + 0 + 6 + 1 + 54 + 6 + 41 + 1 + 510 + 45 = 666.

It is not a de Polignac number, because 206154641151045 - 2⁶ = 206154641150981 is a prime.

It is a super-2 number, since 2×206154641151045² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11333700 + ... + 23254290.

It is an arithmetic number, because the mean of its divisors is an integer number (7481685395184).

Almost surely, 2^{206154641151045} is an apocalyptic number.

It is an amenable number.

206154641151045 is a deficient number, since it is larger than the sum of its proper divisors (152966257817787).

206154641151045 is a wasteful number, since it uses less digits than its factorization.

206154641151045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11922522 (or 11922519 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The spelling of 206154641151045 in words is "two hundred six trillion, one hundred fifty-four billion, six hundred forty-one million, one hundred fifty-one thousand, forty-five".