100660988401 has 2 divisors, whose sum is σ = 100660988402. Its totient is φ = 100660988400.

The previous prime is 100660988371. The next prime is 100660988411. The reversal of 100660988401 is 104889066001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93193436176 + 7467552225 = 305276^2 + 86415^2 .

It is an emirp because it is prime and its reverse (104889066001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100660988401 - 2¹³ = 100660980209 is a prime.

It is not a weakly prime, because it can be changed into another prime (100660988411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50330494200 + 50330494201.

It is an arithmetic number, because the mean of its divisors is an integer number (50330494201).

Almost surely, 2^100660988401 is an apocalyptic number.

It is an amenable number.

100660988401 is a deficient number, since it is larger than the sum of its proper divisors (1).

100660988401 is an equidigital number, since it uses as much as digits as its factorization.

100660988401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 100660988401 in words is "one hundred billion, six hundred sixty million, nine hundred eighty-eight thousand, four hundred one".