285151707723 has 16 divisors (see below), whose sum is σ = 400271072000. Its totient is φ = 180069648480.

The previous prime is 285151707677. The next prime is 285151707727. The reversal of 285151707723 is 327707151582.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-285151707723 is a prime.

It is a super-2 number, since 2×285151707723² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285151707727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36138 + ... + 756048.

It is an arithmetic number, because the mean of its divisors is an integer number (25016942000).

Almost surely, 2^285151707723 is an apocalyptic number.

285151707723 is a deficient number, since it is larger than the sum of its proper divisors (115119364277).

285151707723 is a wasteful number, since it uses less digits than its factorization.

285151707723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726882.

The product of its (nonzero) digits is 823200, while the sum is 48.

The spelling of 285151707723 in words is "two hundred eighty-five billion, one hundred fifty-one million, seven hundred seven thousand, seven hundred twenty-three".