140043542465 has 8 divisors (see below), whose sum is σ = 168054277608. Its totient is φ = 112033482880.

The previous prime is 140043542411. The next prime is 140043542473. The reversal of 140043542465 is 564245340041.

It can be written as a sum of positive squares in 4 ways, for example, as 25182198721 + 114861343744 = 158689^2 + 338912^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-140043542465 is a prime.

It is a super-2 number, since 2×140043542465² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635285 + ... + 826845.

It is an arithmetic number, because the mean of its divisors is an integer number (21006784701).

Almost surely, 2^140043542465 is an apocalyptic number.

It is an amenable number.

140043542465 is a deficient number, since it is larger than the sum of its proper divisors (28010735143).

140043542465 is a wasteful number, since it uses less digits than its factorization.

140043542465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337779.

The product of its (nonzero) digits is 230400, while the sum is 38.

The spelling of 140043542465 in words is "one hundred forty billion, forty-three million, five hundred forty-two thousand, four hundred sixty-five".