1555264971783 has 48 divisors (see below), whose sum is σ = 2296156262400. Its totient is φ = 1014193552320.

The previous prime is 1555264971781. The next prime is 1555264971797. The reversal of 1555264971783 is 3871794625551.

1555264971783 is a `hidden beast` number, since 1 + 5 + 5 + 52 + 6 + 497 + 17 + 83 = 666.

It is not a de Polignac number, because 1555264971783 - 2¹ = 1555264971781 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1555264971783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555264971781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56522833 + ... + 56550341.

It is an arithmetic number, because the mean of its divisors is an integer number (47836588800).

Almost surely, 2^{1555264971783} is an apocalyptic number.

1555264971783 is a deficient number, since it is larger than the sum of its proper divisors (740891290617).

1555264971783 is a wasteful number, since it uses less digits than its factorization.

1555264971783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28332 (or 28329 counting only the distinct ones).

The product of its digits is 63504000, while the sum is 63.

The spelling of 1555264971783 in words is "one trillion, five hundred fifty-five billion, two hundred sixty-four million, nine hundred seventy-one thousand, seven hundred eighty-three".