121765754747 has 12 divisors (see below), whose sum is σ = 152541715536. Its totient is φ = 96342135120.

The previous prime is 121765754731. The next prime is 121765754749. The reversal of 121765754747 is 747457567121.

It is a happy number.

It is not a de Polignac number, because 121765754747 - 2⁴ = 121765754731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121765754692 and 121765754701.

It is not an unprimeable number, because it can be changed into a prime (121765754749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95576879 + ... + 95578152.

It is an arithmetic number, because the mean of its divisors is an integer number (12711809628).

Almost surely, 2^121765754747 is an apocalyptic number.

121765754747 is a deficient number, since it is larger than the sum of its proper divisors (30775960789).

121765754747 is a wasteful number, since it uses less digits than its factorization.

121765754747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191155058 (or 191155051 counting only the distinct ones).

The product of its digits is 11524800, while the sum is 56.

The spelling of 121765754747 in words is "one hundred twenty-one billion, seven hundred sixty-five million, seven hundred fifty-four thousand, seven hundred forty-seven".