1864572272641 has 16 divisors (see below), whose sum is σ = 2009915712000. Its totient is φ = 1719503203968.

The previous prime is 1864572272639. The next prime is 1864572272683. The reversal of 1864572272641 is 1462722754681.

It is a cyclic number.

It is not a de Polignac number, because 1864572272641 - 2¹ = 1864572272639 is a prime.

It is a super-2 number, since 2×1864572272641² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1864572272441) 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, 61953525 + ... + 61983613.

It is an arithmetic number, because the mean of its divisors is an integer number (125619732000).

Almost surely, 2^{1864572272641} is an apocalyptic number.

It is an amenable number.

1864572272641 is a deficient number, since it is larger than the sum of its proper divisors (145343439359).

1864572272641 is a wasteful number, since it uses less digits than its factorization.

1864572272641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34488.

The product of its digits is 9031680, while the sum is 55.

The spelling of 1864572272641 in words is "one trillion, eight hundred sixty-four billion, five hundred seventy-two million, two hundred seventy-two thousand, six hundred forty-one".