97844723701 has 2 divisors, whose sum is σ = 97844723702. Its totient is φ = 97844723700.

The previous prime is 97844723653. The next prime is 97844723723. The reversal of 97844723701 is 10732744879.

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., 72670141476 + 25174582225 = 269574^2 + 158665^2 .

It is a cyclic number.

It is not a de Polignac number, because 97844723701 - 2¹³ = 97844715509 is a prime.

It is a super-2 number, since 2×97844723701² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97844723761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48922361850 + 48922361851.

It is an arithmetic number, because the mean of its divisors is an integer number (48922361851).

Almost surely, 2^97844723701 is an apocalyptic number.

It is an amenable number.

97844723701 is a deficient number, since it is larger than the sum of its proper divisors (1).

97844723701 is an equidigital number, since it uses as much as digits as its factorization.

97844723701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 97844723701 in words is "ninety-seven billion, eight hundred forty-four million, seven hundred twenty-three thousand, seven hundred one".