11203772551 has 2 divisors, whose sum is σ = 11203772552. Its totient is φ = 11203772550.

The previous prime is 11203772539. The next prime is 11203772687. The reversal of 11203772551 is 15527730211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11203772551 - 2¹¹ = 11203770503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11203772521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5601886275 + 5601886276.

It is an arithmetic number, because the mean of its divisors is an integer number (5601886276).

Almost surely, 2^11203772551 is an apocalyptic number.

11203772551 is a deficient number, since it is larger than the sum of its proper divisors (1).

11203772551 is an equidigital number, since it uses as much as digits as its factorization.

11203772551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14700, while the sum is 34.

The spelling of 11203772551 in words is "eleven billion, two hundred three million, seven hundred seventy-two thousand, five hundred fifty-one".