62728887421 has 2 divisors, whose sum is σ = 62728887422. Its totient is φ = 62728887420.

The previous prime is 62728887409. The next prime is 62728887427. The reversal of 62728887421 is 12478882726.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40703062500 + 22025824921 = 201750^2 + 148411^2 .

It is a cyclic number.

It is not a de Polignac number, because 62728887421 - 2²⁷ = 62594669693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (62728887427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31364443710 + 31364443711.

It is an arithmetic number, because the mean of its divisors is an integer number (31364443711).

Almost surely, 2^62728887421 is an apocalyptic number.

It is an amenable number.

62728887421 is a deficient number, since it is larger than the sum of its proper divisors (1).

62728887421 is an equidigital number, since it uses as much as digits as its factorization.

62728887421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4816896, while the sum is 55.

The spelling of 62728887421 in words is "sixty-two billion, seven hundred twenty-eight million, eight hundred eighty-seven thousand, four hundred twenty-one".