140601621511 has 4 divisors (see below), whose sum is σ = 151417130872. Its totient is φ = 129786112152.

The previous prime is 140601621491. The next prime is 140601621547. The reversal of 140601621511 is 115126106041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140601621511 - 2³¹ = 138454137863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140601621511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140601421511) 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, 5407754661 + ... + 5407754686.

It is an arithmetic number, because the mean of its divisors is an integer number (37854282718).

Almost surely, 2^140601621511 is an apocalyptic number.

140601621511 is a deficient number, since it is larger than the sum of its proper divisors (10815509361).

140601621511 is a wasteful number, since it uses less digits than its factorization.

140601621511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10815509360.

The product of its (nonzero) digits is 1440, while the sum is 28.

Adding to 140601621511 its reverse (115126106041), we get a palindrome (255727727552).

The spelling of 140601621511 in words is "one hundred forty billion, six hundred one million, six hundred twenty-one thousand, five hundred eleven".