121145634545 has 64 divisors (see below), whose sum is σ = 164015953920. Its totient is φ = 85292697600.

The previous prime is 121145634529. The next prime is 121145634557. The reversal of 121145634545 is 545436541121.

It is not a de Polignac number, because 121145634545 - 2⁴ = 121145634529 is a prime.

It is a super-3 number, since 3×121145634545³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56848130 + ... + 56850260.

It is an arithmetic number, because the mean of its divisors is an integer number (2562749280).

Almost surely, 2^121145634545 is an apocalyptic number.

It is an amenable number.

121145634545 is a deficient number, since it is larger than the sum of its proper divisors (42870319375).

121145634545 is a wasteful number, since it uses less digits than its factorization.

121145634545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586.

The product of its digits is 288000, while the sum is 41.

The spelling of 121145634545 in words is "one hundred twenty-one billion, one hundred forty-five million, six hundred thirty-four thousand, five hundred forty-five".