19972401401 has 2 divisors, whose sum is σ = 19972401402. Its totient is φ = 19972401400.

The previous prime is 19972401359. The next prime is 19972401443. The reversal of 19972401401 is 10410427991.

It is a balanced prime because it is at equal distance from previous prime (19972401359) and next prime (19972401443).

It can be written as a sum of positive squares in only one way, i.e., 11009045776 + 8963355625 = 104924^2 + 94675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19972401401 is a prime.

It is not a weakly prime, because it can be changed into another prime (19972401301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9986200700 + 9986200701.

It is an arithmetic number, because the mean of its divisors is an integer number (9986200701).

Almost surely, 2^19972401401 is an apocalyptic number.

It is an amenable number.

19972401401 is a deficient number, since it is larger than the sum of its proper divisors (1).

19972401401 is an equidigital number, since it uses as much as digits as its factorization.

19972401401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The spelling of 19972401401 in words is "nineteen billion, nine hundred seventy-two million, four hundred one thousand, four hundred one".