11403501997 has 2 divisors, whose sum is σ = 11403501998. Its totient is φ = 11403501996.

The previous prime is 11403501983. The next prime is 11403502001. The reversal of 11403501997 is 79910530411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10058886436 + 1344615561 = 100294^2 + 36669^2 .

It is a cyclic number.

It is not a de Polignac number, because 11403501997 - 2³¹ = 9256018349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11403501797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5701750998 + 5701750999.

It is an arithmetic number, because the mean of its divisors is an integer number (5701750999).

Almost surely, 2^11403501997 is an apocalyptic number.

It is an amenable number.

11403501997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11403501997 is an equidigital number, since it uses as much as digits as its factorization.

11403501997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 40.

The spelling of 11403501997 in words is "eleven billion, four hundred three million, five hundred one thousand, nine hundred ninety-seven".