387058357421 has 2 divisors, whose sum is σ = 387058357422. Its totient is φ = 387058357420.

The previous prime is 387058357417. The next prime is 387058357507. The reversal of 387058357421 is 124753850783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196726844521 + 190331512900 = 443539^2 + 436270^2 .

It is a cyclic number.

It is not a de Polignac number, because 387058357421 - 2² = 387058357417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387058357121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193529178710 + 193529178711.

It is an arithmetic number, because the mean of its divisors is an integer number (193529178711).

Almost surely, 2^387058357421 is an apocalyptic number.

It is an amenable number.

387058357421 is a deficient number, since it is larger than the sum of its proper divisors (1).

387058357421 is an equidigital number, since it uses as much as digits as its factorization.

387058357421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 387058357421 in words is "three hundred eighty-seven billion, fifty-eight million, three hundred fifty-seven thousand, four hundred twenty-one".