87743619641 has 2 divisors, whose sum is σ = 87743619642. Its totient is φ = 87743619640.

The previous prime is 87743619559. The next prime is 87743619671. The reversal of 87743619641 is 14691634778.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65636390416 + 22107229225 = 256196^2 + 148685^2 .

It is a cyclic number.

It is not a de Polignac number, because 87743619641 - 2¹⁴ = 87743603257 is a prime.

It is not a weakly prime, because it can be changed into another prime (87743619671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43871809820 + 43871809821.

It is an arithmetic number, because the mean of its divisors is an integer number (43871809821).

Almost surely, 2^87743619641 is an apocalyptic number.

It is an amenable number.

87743619641 is a deficient number, since it is larger than the sum of its proper divisors (1).

87743619641 is an equidigital number, since it uses as much as digits as its factorization.

87743619641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 56.

The spelling of 87743619641 in words is "eighty-seven billion, seven hundred forty-three million, six hundred nineteen thousand, six hundred forty-one".