428013696973 has 2 divisors, whose sum is σ = 428013696974. Its totient is φ = 428013696972.

The previous prime is 428013696931. The next prime is 428013696989. The reversal of 428013696973 is 379696310824.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222026612809 + 205987084164 = 471197^2 + 453858^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428013696973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428013696373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214006848486 + 214006848487.

It is an arithmetic number, because the mean of its divisors is an integer number (214006848487).

Almost surely, 2^428013696973 is an apocalyptic number.

It is an amenable number.

428013696973 is a deficient number, since it is larger than the sum of its proper divisors (1).

428013696973 is an equidigital number, since it uses as much as digits as its factorization.

428013696973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11757312, while the sum is 58.

The spelling of 428013696973 in words is "four hundred twenty-eight billion, thirteen million, six hundred ninety-six thousand, nine hundred seventy-three".