531782376975361 has 16 divisors (see below), whose sum is σ = 545201846035200. Its totient is φ = 518556036960000.

The previous prime is 531782376975277. The next prime is 531782376975389. The reversal of 531782376975361 is 163579673287135.

It is a cyclic number.

It is not a de Polignac number, because 531782376975361 - 2¹³ = 531782376967169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531782376975461) 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, 79902351 + ... + 86301508.

It is an arithmetic number, because the mean of its divisors is an integer number (34075115377200).

Almost surely, 2^{531782376975361} is an apocalyptic number.

It is an amenable number.

531782376975361 is a deficient number, since it is larger than the sum of its proper divisors (13419469059839).

531782376975361 is a wasteful number, since it uses less digits than its factorization.

531782376975361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166204440.

The product of its digits is 1200225600, while the sum is 73.

The spelling of 531782376975361 in words is "five hundred thirty-one trillion, seven hundred eighty-two billion, three hundred seventy-six million, nine hundred seventy-five thousand, three hundred sixty-one".