1401210785477 has 2 divisors, whose sum is σ = 1401210785478. Its totient is φ = 1401210785476.

The previous prime is 1401210785441. The next prime is 1401210785521. The reversal of 1401210785477 is 7745870121041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1367143224001 + 34067561476 = 1169249^2 + 184574^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401210785477 - 2¹⁶ = 1401210719941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401210785077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700605392738 + 700605392739.

It is an arithmetic number, because the mean of its divisors is an integer number (700605392739).

Almost surely, 2^{1401210785477} is an apocalyptic number.

It is an amenable number.

1401210785477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401210785477 is an equidigital number, since it uses as much as digits as its factorization.

1401210785477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 439040, while the sum is 47.

The spelling of 1401210785477 in words is "one trillion, four hundred one billion, two hundred ten million, seven hundred eighty-five thousand, four hundred seventy-seven".