140187687445 has 8 divisors (see below), whose sum is σ = 181165626936. Its totient is φ = 103523215296.

The previous prime is 140187687443. The next prime is 140187687461. The reversal of 140187687445 is 544786781041.

It can be written as a sum of positive squares in 4 ways, for example, as 4027425444 + 136160262001 = 63462^2 + 368999^2 .

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 140187687445 - 2¹ = 140187687443 is a prime.

It is a super-2 number, since 2×140187687445² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140187687443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1078366762 + ... + 1078366891.

It is an arithmetic number, because the mean of its divisors is an integer number (22645703367).

Almost surely, 2^140187687445 is an apocalyptic number.

It is an amenable number.

140187687445 is a deficient number, since it is larger than the sum of its proper divisors (40977939491).

140187687445 is a wasteful number, since it uses less digits than its factorization.

140187687445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156733671.

The product of its (nonzero) digits is 6021120, while the sum is 55.

The spelling of 140187687445 in words is "one hundred forty billion, one hundred eighty-seven million, six hundred eighty-seven thousand, four hundred forty-five".