140621601662121 has 16 divisors (see below), whose sum is σ = 187995099156480. Its totient is φ = 93498084155280.

The previous prime is 140621601662093. The next prime is 140621601662197. The reversal of 140621601662121 is 121266106126041.

It is not a de Polignac number, because 140621601662121 - 2¹⁹ = 140621601137833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140621601662121.

It is not an unprimeable number, because it can be changed into a prime (140621601662021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17192475 + ... + 24017168.

It is an arithmetic number, because the mean of its divisors is an integer number (11749693697280).

Almost surely, 2^{140621601662121} is an apocalyptic number.

It is an amenable number.

140621601662121 is a deficient number, since it is larger than the sum of its proper divisors (47373497494359).

140621601662121 is a wasteful number, since it uses less digits than its factorization.

140621601662121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41212676.

The product of its (nonzero) digits is 41472, while the sum is 39.

Adding to 140621601662121 its reverse (121266106126041), we get a palindrome (261887707788162).

The spelling of 140621601662121 in words is "one hundred forty trillion, six hundred twenty-one billion, six hundred one million, six hundred sixty-two thousand, one hundred twenty-one".