48542179421 has 2 divisors, whose sum is σ = 48542179422. Its totient is φ = 48542179420.

The previous prime is 48542179373. The next prime is 48542179471. The reversal of 48542179421 is 12497124584.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46134314521 + 2407864900 = 214789^2 + 49070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48542179421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48542179471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24271089710 + 24271089711.

It is an arithmetic number, because the mean of its divisors is an integer number (24271089711).

Almost surely, 2^48542179421 is an apocalyptic number.

It is an amenable number.

48542179421 is a deficient number, since it is larger than the sum of its proper divisors (1).

48542179421 is an equidigital number, since it uses as much as digits as its factorization.

48542179421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 47.

The spelling of 48542179421 in words is "forty-eight billion, five hundred forty-two million, one hundred seventy-nine thousand, four hundred twenty-one".