121925152643 has 8 divisors (see below), whose sum is σ = 146676875520. Its totient is φ = 99006890760.

The previous prime is 121925152633. The next prime is 121925152691. The reversal of 121925152643 is 346251529121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121925152643 - 2¹⁴ = 121925136259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121925152643.

It is not an unprimeable number, because it can be changed into a prime (121925152633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458365103 + ... + 458365368.

It is an arithmetic number, because the mean of its divisors is an integer number (18334609440).

Almost surely, 2^121925152643 is an apocalyptic number.

121925152643 is a deficient number, since it is larger than the sum of its proper divisors (24751722877).

121925152643 is an equidigital number, since it uses as much as digits as its factorization.

121925152643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916730497.

The product of its digits is 129600, while the sum is 41.

The spelling of 121925152643 in words is "one hundred twenty-one billion, nine hundred twenty-five million, one hundred fifty-two thousand, six hundred forty-three".