102471625849561 has 8 divisors (see below), whose sum is σ = 109617918739560. Its totient is φ = 95449616314368.

The previous prime is 102471625849559. The next prime is 102471625849603. The reversal of 102471625849561 is 165948526174201.

It can be written as a sum of positive squares in 4 ways, for example, as 51775004385225 + 50696621464336 = 7195485^2 + 7120156^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102471625849561 - 2¹ = 102471625849559 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 102471625849561.

It is not an unprimeable number, because it can be changed into a prime (102471625849501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31070836996 + ... + 31070840293.

It is an arithmetic number, because the mean of its divisors is an integer number (13702239842445).

Almost surely, 2^{102471625849561} is an apocalyptic number.

It is an amenable number.

102471625849561 is a deficient number, since it is larger than the sum of its proper divisors (7146292889999).

102471625849561 is an equidigital number, since it uses as much as digits as its factorization.

102471625849561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62141677403.

The product of its (nonzero) digits is 29030400, while the sum is 61.

The spelling of 102471625849561 in words is "one hundred two trillion, four hundred seventy-one billion, six hundred twenty-five million, eight hundred forty-nine thousand, five hundred sixty-one".