11754533640 has 64 divisors (see below), whose sum is σ = 36796809600. Its totient is φ = 2998257152.

The previous prime is 11754533633. The next prime is 11754533689. The reversal of 11754533640 is 4633545711.

It is a super-2 number, since 2×11754533640² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 2126685 + ... + 2132204.

It is an arithmetic number, because the mean of its divisors is an integer number (574950150).

Almost surely, 2^11754533640 is an apocalyptic number.

11754533640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11754533640 is an abundant number, since it is smaller than the sum of its proper divisors (25042275960).

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

11754533640 is a wasteful number, since it uses less digits than its factorization.

11754533640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4258926 (or 4258922 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 11754533640 in words is "eleven billion, seven hundred fifty-four million, five hundred thirty-three thousand, six hundred forty".