76483720421 has 2 divisors, whose sum is σ = 76483720422. Its totient is φ = 76483720420.

The previous prime is 76483720393. The next prime is 76483720471. The reversal of 76483720421 is 12402738467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76335611521 + 148108900 = 276289^2 + 12170^2 .

It is a cyclic number.

It is not a de Polignac number, because 76483720421 - 2³⁴ = 59303851237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76483720471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38241860210 + 38241860211.

It is an arithmetic number, because the mean of its divisors is an integer number (38241860211).

Almost surely, 2^76483720421 is an apocalyptic number.

It is an amenable number.

76483720421 is a deficient number, since it is larger than the sum of its proper divisors (1).

76483720421 is an equidigital number, since it uses as much as digits as its factorization.

76483720421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 44.

The spelling of 76483720421 in words is "seventy-six billion, four hundred eighty-three million, seven hundred twenty thousand, four hundred twenty-one".