121752410624 has 40 divisors (see below), whose sum is σ = 261979885860. Its totient is φ = 56193417216.

The previous prime is 121752410569. The next prime is 121752410629. The reversal of 121752410624 is 426014257121.

It can be written as a sum of positive squares in 2 ways, for example, as 116985889024 + 4766521600 = 342032^2 + 69040^2 .

It is not an unprimeable number, because it can be changed into a prime (121752410629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9139409 + ... + 9152720.

Almost surely, 2^121752410624 is an apocalyptic number.

It is an amenable number.

121752410624 is an abundant number, since it is smaller than the sum of its proper divisors (140227475236).

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

121752410624 is an equidigital number, since it uses as much as digits as its factorization.

121752410624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18292160 (or 18292144 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

Adding to 121752410624 its reverse (426014257121), we get a palindrome (547766667745).

The spelling of 121752410624 in words is "one hundred twenty-one billion, seven hundred fifty-two million, four hundred ten thousand, six hundred twenty-four".