16472190421 has 2 divisors, whose sum is σ = 16472190422. Its totient is φ = 16472190420.

The previous prime is 16472190407. The next prime is 16472190431. The reversal of 16472190421 is 12409127461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16146784900 + 325405521 = 127070^2 + 18039^2 .

It is a cyclic number.

It is not a de Polignac number, because 16472190421 - 2⁵ = 16472190389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16472190431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8236095210 + 8236095211.

It is an arithmetic number, because the mean of its divisors is an integer number (8236095211).

Almost surely, 2^16472190421 is an apocalyptic number.

It is an amenable number.

16472190421 is a deficient number, since it is larger than the sum of its proper divisors (1).

16472190421 is an equidigital number, since it uses as much as digits as its factorization.

16472190421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 16472190421 in words is "sixteen billion, four hundred seventy-two million, one hundred ninety thousand, four hundred twenty-one".