2721195938605 has 16 divisors (see below), whose sum is σ = 3300667388928. Its totient is φ = 2153594520000.

The previous prime is 2721195938581. The next prime is 2721195938621. The reversal of 2721195938605 is 5068395911272.

It is not a de Polignac number, because 2721195938605 - 2²¹ = 2721193841453 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 2721195938605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7698471 + ... + 8044180.

It is an arithmetic number, because the mean of its divisors is an integer number (206291711808).

Almost surely, 2^{2721195938605} is an apocalyptic number.

It is an amenable number.

2721195938605 is a deficient number, since it is larger than the sum of its proper divisors (579471450323).

2721195938605 is a wasteful number, since it uses less digits than its factorization.

2721195938605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15743028.

The product of its (nonzero) digits is 8164800, while the sum is 58.

The spelling of 2721195938605 in words is "two trillion, seven hundred twenty-one billion, one hundred ninety-five million, nine hundred thirty-eight thousand, six hundred five".