11434021564 has 24 divisors (see below), whose sum is σ = 22887472608. Its totient is φ = 4896131520.

The previous prime is 11434021561. The next prime is 11434021589. The reversal of 11434021564 is 46512043411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11434021561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139819 + ... + 205954.

It is an arithmetic number, because the mean of its divisors is an integer number (953644692).

Almost surely, 2^11434021564 is an apocalyptic number.

11434021564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11434021564 is an abundant number, since it is smaller than the sum of its proper divisors (11453451044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11434021564 is a wasteful number, since it uses less digits than its factorization.

11434021564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346965 (or 346963 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 11434021564 its reverse (46512043411), we get a palindrome (57946064975).

The spelling of 11434021564 in words is "eleven billion, four hundred thirty-four million, twenty-one thousand, five hundred sixty-four".