121464340136 has 8 divisors (see below), whose sum is σ = 227745637770. Its totient is φ = 60732170064.

The previous prime is 121464340117. The next prime is 121464340139. The reversal of 121464340136 is 631043464121.

It can be written as a sum of positive squares in only one way, i.e., 78405600100 + 43058740036 = 280010^2 + 207506^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 121464340096 and 121464340105.

It is not an unprimeable number, because it can be changed into a prime (121464340139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7591521251 + ... + 7591521266.

Almost surely, 2^121464340136 is an apocalyptic number.

It is an amenable number.

121464340136 is a deficient number, since it is larger than the sum of its proper divisors (106281297634).

121464340136 is a wasteful number, since it uses less digits than its factorization.

121464340136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15183042523 (or 15183042519 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 121464340136 in words is "one hundred twenty-one billion, four hundred sixty-four million, three hundred forty thousand, one hundred thirty-six".