48779876021 has 2 divisors, whose sum is σ = 48779876022. Its totient is φ = 48779876020.

The previous prime is 48779875961. The next prime is 48779876027. The reversal of 48779876021 is 12067897784.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25710519025 + 23069356996 = 160345^2 + 151886^2 .

It is a cyclic number.

It is not a de Polignac number, because 48779876021 - 2¹⁸ = 48779613877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48779876027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24389938010 + 24389938011.

It is an arithmetic number, because the mean of its divisors is an integer number (24389938011).

Almost surely, 2^48779876021 is an apocalyptic number.

It is an amenable number.

48779876021 is a deficient number, since it is larger than the sum of its proper divisors (1).

48779876021 is an equidigital number, since it uses as much as digits as its factorization.

48779876021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9483264, while the sum is 59.

The spelling of 48779876021 in words is "forty-eight billion, seven hundred seventy-nine million, eight hundred seventy-six thousand, twenty-one".