11372820455 has 4 divisors (see below), whose sum is σ = 13647384552. Its totient is φ = 9098256360.

The previous prime is 11372820421. The next prime is 11372820457. The reversal of 11372820455 is 55402827311.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11372820455 - 2⁶ = 11372820391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11372820457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1137282041 + ... + 1137282050.

It is an arithmetic number, because the mean of its divisors is an integer number (3411846138).

Almost surely, 2^11372820455 is an apocalyptic number.

11372820455 is a deficient number, since it is larger than the sum of its proper divisors (2274564097).

11372820455 is an equidigital number, since it uses as much as digits as its factorization.

11372820455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274564096.

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 11372820455 in words is "eleven billion, three hundred seventy-two million, eight hundred twenty thousand, four hundred fifty-five".