11781001295644 has 12 divisors (see below), whose sum is σ = 23562002591344. Its totient is φ = 5049000555264.

The previous prime is 11781001295633. The next prime is 11781001295663. The reversal of 11781001295644 is 44659210018711.

11781001295644 is an admirable number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210375023109 + ... + 210375023164.

Almost surely, 2^{11781001295644} is an apocalyptic number.

11781001295644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11781001295644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11781001295644 is a wasteful number, since it uses less digits than its factorization.

11781001295644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420750046284 (or 420750046282 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 11781001295644 in words is "eleven trillion, seven hundred eighty-one billion, one million, two hundred ninety-five thousand, six hundred forty-four".