48285878131661 has 2 divisors, whose sum is σ = 48285878131662. Its totient is φ = 48285878131660.

The previous prime is 48285878131657. The next prime is 48285878131669. The reversal of 48285878131661 is 16613187858284.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44638901125225 + 3646977006436 = 6681235^2 + 1909706^2 .

It is a cyclic number.

It is not a de Polignac number, because 48285878131661 - 2² = 48285878131657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 48285878131591 and 48285878131600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48285878131669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24142939065830 + 24142939065831.

It is an arithmetic number, because the mean of its divisors is an integer number (24142939065831).

Almost surely, 2^{48285878131661} is an apocalyptic number.

It is an amenable number.

48285878131661 is a deficient number, since it is larger than the sum of its proper divisors (1).

48285878131661 is an equidigital number, since it uses as much as digits as its factorization.

48285878131661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 123863040, while the sum is 68.

The spelling of 48285878131661 in words is "forty-eight trillion, two hundred eighty-five billion, eight hundred seventy-eight million, one hundred thirty-one thousand, six hundred sixty-one".