100573132657421 has 2 divisors, whose sum is σ = 100573132657422. Its totient is φ = 100573132657420.

The previous prime is 100573132657399. The next prime is 100573132657451. The reversal of 100573132657421 is 124756231375001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96118141488196 + 4454991169225 = 9803986^2 + 2110685^2 .

It is an emirp because it is prime and its reverse (124756231375001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100573132657421 is a prime.

It is a super-2 number, since 2×100573132657421² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100573132657451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50286566328710 + 50286566328711.

It is an arithmetic number, because the mean of its divisors is an integer number (50286566328711).

Almost surely, 2^{100573132657421} is an apocalyptic number.

It is an amenable number.

100573132657421 is a deficient number, since it is larger than the sum of its proper divisors (1).

100573132657421 is an equidigital number, since it uses as much as digits as its factorization.

100573132657421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 100573132657421 in words is "one hundred trillion, five hundred seventy-three billion, one hundred thirty-two million, six hundred fifty-seven thousand, four hundred twenty-one".