121343673756485 has 16 divisors (see below), whose sum is σ = 148002170580720. Its totient is φ = 95481821783040.

The previous prime is 121343673756479. The next prime is 121343673756527. The reversal of 121343673756485 is 584657376343121.

It can be written as a sum of positive squares in 8 ways, for example, as 80573494923076 + 40770178833409 = 8976274^2 + 6385153^2 .

It is not a de Polignac number, because 121343673756485 - 2¹⁴ = 121343673740101 is a prime.

It is a super-2 number, since 2×121343673756485² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13451471 + ... + 20582259.

It is an arithmetic number, because the mean of its divisors is an integer number (9250135661295).

Almost surely, 2^{121343673756485} is an apocalyptic number.

It is an amenable number.

121343673756485 is a deficient number, since it is larger than the sum of its proper divisors (26658496824235).

121343673756485 is an equidigital number, since it uses as much as digits as its factorization.

121343673756485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7186648.

The product of its digits is 304819200, while the sum is 65.

The spelling of 121343673756485 in words is "one hundred twenty-one trillion, three hundred forty-three billion, six hundred seventy-three million, seven hundred fifty-six thousand, four hundred eighty-five".