126651400165 has 8 divisors (see below), whose sum is σ = 152914084128. Its totient is φ = 100699517520.

The previous prime is 126651400129. The next prime is 126651400189. The reversal of 126651400165 is 561004156621.

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

It is not a de Polignac number, because 126651400165 - 2¹¹ = 126651398117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77699431 + ... + 77701060.

It is an arithmetic number, because the mean of its divisors is an integer number (19114260516).

Almost surely, 2^126651400165 is an apocalyptic number.

It is an amenable number.

126651400165 is a deficient number, since it is larger than the sum of its proper divisors (26262683963).

126651400165 is a wasteful number, since it uses less digits than its factorization.

126651400165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155400659.

The product of its (nonzero) digits is 43200, while the sum is 37.

Adding to 126651400165 its reverse (561004156621), we get a palindrome (687655556786).

The spelling of 126651400165 in words is "one hundred twenty-six billion, six hundred fifty-one million, four hundred thousand, one hundred sixty-five".