1642553036601 has 4 divisors (see below), whose sum is σ = 2190070715472. Its totient is φ = 1095035357732.

The previous prime is 1642553036563. The next prime is 1642553036629. The reversal of 1642553036601 is 1066303552461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1642553036601 - 2¹¹ = 1642553034553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1642553036651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273758839431 + ... + 273758839436.

It is an arithmetic number, because the mean of its divisors is an integer number (547517678868).

Almost surely, 2^{1642553036601} is an apocalyptic number.

It is an amenable number.

1642553036601 is a deficient number, since it is larger than the sum of its proper divisors (547517678871).

1642553036601 is an equidigital number, since it uses as much as digits as its factorization.

1642553036601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547517678870.

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 1642553036601 in words is "one trillion, six hundred forty-two billion, five hundred fifty-three million, thirty-six thousand, six hundred one".