121546765560 has 128 divisors (see below), whose sum is σ = 401507539200. Its totient is φ = 29190466560.

The previous prime is 121546765531. The next prime is 121546765573. The reversal of 121546765560 is 65567645121.

It is a super-2 number, since 2×121546765560² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 289045 + ... + 571524.

It is an arithmetic number, because the mean of its divisors is an integer number (3136777650).

Almost surely, 2^121546765560 is an apocalyptic number.

121546765560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121546765560 is an abundant number, since it is smaller than the sum of its proper divisors (279960773640).

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

121546765560 is a wasteful number, since it uses less digits than its factorization.

121546765560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860701 (or 860697 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 121546765560 in words is "one hundred twenty-one billion, five hundred forty-six million, seven hundred sixty-five thousand, five hundred sixty".