1620201740101 has 16 divisors (see below), whose sum is σ = 1860413622400. Its totient is φ = 1382182843968.

The previous prime is 1620201740099. The next prime is 1620201740111. The reversal of 1620201740101 is 1010471020261.

It is a cyclic number.

It is not a de Polignac number, because 1620201740101 - 2¹ = 1620201740099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620201740111) 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, 4312915 + ... + 4673503.

It is an arithmetic number, because the mean of its divisors is an integer number (116275851400).

Almost surely, 2^{1620201740101} is an apocalyptic number.

It is an amenable number.

1620201740101 is a deficient number, since it is larger than the sum of its proper divisors (240211882299).

1620201740101 is a wasteful number, since it uses less digits than its factorization.

1620201740101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363628.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 1620201740101 its reverse (1010471020261), we get a palindrome (2630672760362).

The spelling of 1620201740101 in words is "one trillion, six hundred twenty billion, two hundred one million, seven hundred forty thousand, one hundred one".