386658783421 has 2 divisors, whose sum is σ = 386658783422. Its totient is φ = 386658783420.

The previous prime is 386658783403. The next prime is 386658783431. The reversal of 386658783421 is 124387856683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 371625571321 + 15033212100 = 609611^2 + 122610^2 .

It is a cyclic number.

It is not a de Polignac number, because 386658783421 - 2¹¹ = 386658781373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 386658783421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386658783431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193329391710 + 193329391711.

It is an arithmetic number, because the mean of its divisors is an integer number (193329391711).

Almost surely, 2^386658783421 is an apocalyptic number.

It is an amenable number.

386658783421 is a deficient number, since it is larger than the sum of its proper divisors (1).

386658783421 is an equidigital number, since it uses as much as digits as its factorization.

386658783421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46448640, while the sum is 61.

The spelling of 386658783421 in words is "three hundred eighty-six billion, six hundred fifty-eight million, seven hundred eighty-three thousand, four hundred twenty-one".