1636100066513 has 6 divisors (see below), whose sum is σ = 1798357924482. Its totient is φ = 1487363696720.

The previous prime is 1636100066509. The next prime is 1636100066519. The reversal of 1636100066513 is 3156600016361.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1506137653504 + 129962413009 = 1227248^2 + 360503^2 .

It is not a de Polignac number, because 1636100066513 - 2² = 1636100066509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1636100066519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6760743956 + ... + 6760744197.

It is an arithmetic number, because the mean of its divisors is an integer number (299726320747).

Almost surely, 2^{1636100066513} is an apocalyptic number.

It is an amenable number.

1636100066513 is a deficient number, since it is larger than the sum of its proper divisors (162257857969).

1636100066513 is a wasteful number, since it uses less digits than its factorization.

1636100066513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13521488175 (or 13521488164 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 38.

The spelling of 1636100066513 in words is "one trillion, six hundred thirty-six billion, one hundred million, sixty-six thousand, five hundred thirteen".