16510451357 has 16 divisors (see below), whose sum is σ = 17925607152. Its totient is φ = 15149137920.

The previous prime is 16510451341. The next prime is 16510451371. The reversal of 16510451357 is 75315401561.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2627485081 + 13882966276 = 51259^2 + 117826^2 .

It is not a de Polignac number, because 16510451357 - 2⁴ = 16510451341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16510451357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16510451317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46733 + ... + 187629.

It is an arithmetic number, because the mean of its divisors is an integer number (1120350447).

Almost surely, 2^16510451357 is an apocalyptic number.

16510451357 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16510451357 is a deficient number, since it is larger than the sum of its proper divisors (1415155795).

16510451357 is a wasteful number, since it uses less digits than its factorization.

16510451357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141088.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 16510451357 in words is "sixteen billion, five hundred ten million, four hundred fifty-one thousand, three hundred fifty-seven".