121652715767 has 4 divisors (see below), whose sum is σ = 132712053576. Its totient is φ = 110593377960.

The previous prime is 121652715763. The next prime is 121652715791. The reversal of 121652715767 is 767517256121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121652715767 - 2² = 121652715763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121652715763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5529668888 + ... + 5529668909.

It is an arithmetic number, because the mean of its divisors is an integer number (33178013394).

Almost surely, 2^121652715767 is an apocalyptic number.

121652715767 is a deficient number, since it is larger than the sum of its proper divisors (11059337809).

121652715767 is a wasteful number, since it uses less digits than its factorization.

121652715767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11059337808.

The product of its digits is 1234800, while the sum is 50.

The spelling of 121652715767 in words is "one hundred twenty-one billion, six hundred fifty-two million, seven hundred fifteen thousand, seven hundred sixty-seven".