76533000421 has 2 divisors, whose sum is σ = 76533000422. Its totient is φ = 76533000420.

The previous prime is 76533000409. The next prime is 76533000431. The reversal of 76533000421 is 12400033567.

76533000421 = T₂₂₅₈₇₉ + T₂₂₅₈₈₀ + T₂₂₅₈₈₁.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39866112225 + 36666888196 = 199665^2 + 191486^2 .

It is an emirp because it is prime and its reverse (12400033567) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76533000421 - 2¹⁵ = 76532967653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76533000431) 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, 38266500210 + 38266500211.

It is an arithmetic number, because the mean of its divisors is an integer number (38266500211).

Almost surely, 2^76533000421 is an apocalyptic number.

76533000421 is the 225881-st centered triangular number.

It is an amenable number.

76533000421 is a deficient number, since it is larger than the sum of its proper divisors (1).

76533000421 is an equidigital number, since it uses as much as digits as its factorization.

76533000421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

Adding to 76533000421 its reverse (12400033567), we get a palindrome (88933033988).

The spelling of 76533000421 in words is "seventy-six billion, five hundred thirty-three million, four hundred twenty-one", and thus it is an aban number.