527679729397 has 4 divisors (see below), whose sum is σ = 527687694540. Its totient is φ = 527671764256.

The previous prime is 527679729337. The next prime is 527679729439. The reversal of 527679729397 is 793927976725.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 180477130276 + 347202599121 = 424826^2 + 589239^2 .

It is a cyclic number.

It is not a de Polignac number, because 527679729397 - 2¹¹ = 527679727349 is a prime.

It is a super-2 number, since 2×527679729397² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (527679729337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3882358 + ... + 4015975.

It is an arithmetic number, because the mean of its divisors is an integer number (131921923635).

Almost surely, 2^527679729397 is an apocalyptic number.

It is an amenable number.

527679729397 is a deficient number, since it is larger than the sum of its proper divisors (7965143).

527679729397 is an equidigital number, since it uses as much as digits as its factorization.

527679729397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7965142.

The product of its digits is 630118440, while the sum is 73.

The spelling of 527679729397 in words is "five hundred twenty-seven billion, six hundred seventy-nine million, seven hundred twenty-nine thousand, three hundred ninety-seven".