11751963641 has 4 divisors (see below), whose sum is σ = 12820323984. Its totient is φ = 10683603300.

The previous prime is 11751963599. The next prime is 11751963653. The reversal of 11751963641 is 14636915711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11751963641 - 2⁶ = 11751963577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11751963592 and 11751963601.

It is not an unprimeable number, because it can be changed into a prime (11751963661) 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, 534180155 + ... + 534180176.

It is an arithmetic number, because the mean of its divisors is an integer number (3205080996).

Almost surely, 2^11751963641 is an apocalyptic number.

11751963641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11751963641 is a deficient number, since it is larger than the sum of its proper divisors (1068360343).

11751963641 is a wasteful number, since it uses less digits than its factorization.

11751963641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068360342.

The product of its digits is 136080, while the sum is 44.

The spelling of 11751963641 in words is "eleven billion, seven hundred fifty-one million, nine hundred sixty-three thousand, six hundred forty-one".