11620542064640 has 96 divisors (see below), whose sum is σ = 29522639076840. Its totient is φ = 4374792241152.

The previous prime is 11620542064639. The next prime is 11620542064697. The reversal of 11620542064640 is 4646024502611.

It can be written as a sum of positive squares in 4 ways, for example, as 11486785094656 + 133756969984 = 3389216^2 + 365728^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33202937 + ... + 33551096.

Almost surely, 2^{11620542064640} is an apocalyptic number.

11620542064640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11620542064640 is an abundant number, since it is smaller than the sum of its proper divisors (17902097012200).

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

11620542064640 is an equidigital number, since it uses as much as digits as its factorization.

11620542064640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66754077 (or 66754057 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 11620542064640 in words is "eleven trillion, six hundred twenty billion, five hundred forty-two million, sixty-four thousand, six hundred forty".