121645534523232 has 48 divisors (see below), whose sum is σ = 322907388012720. Its totient is φ = 40092910252032.

The previous prime is 121645534523213. The next prime is 121645534523239. The reversal of 121645534523232 is 232325435546121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121645534523239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7118761033 + ... + 7118778120.

It is an arithmetic number, because the mean of its divisors is an integer number (6727237250265).

Almost surely, 2^{121645534523232} is an apocalyptic number.

121645534523232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121645534523232 is an abundant number, since it is smaller than the sum of its proper divisors (201261853489488).

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

121645534523232 is a wasteful number, since it uses less digits than its factorization.

121645534523232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14237539255 (or 14237539247 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 48.

The spelling of 121645534523232 in words is "one hundred twenty-one trillion, six hundred forty-five billion, five hundred thirty-four million, five hundred twenty-three thousand, two hundred thirty-two".