140643513351 has 40 divisors (see below), whose sum is σ = 229474515600. Its totient is φ = 85135224960.

The previous prime is 140643513347. The next prime is 140643513359. The reversal of 140643513351 is 153315346041.

140643513351 is a `hidden beast` number, since 1 + 4 + 0 + 643 + 5 + 1 + 3 + 3 + 5 + 1 = 666.

It is not a de Polignac number, because 140643513351 - 2² = 140643513347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140643513359) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 643435 + ... + 833843.

It is an arithmetic number, because the mean of its divisors is an integer number (5736862890).

Almost surely, 2^140643513351 is an apocalyptic number.

140643513351 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

140643513351 is a deficient number, since it is larger than the sum of its proper divisors (88831002249).

140643513351 is a wasteful number, since it uses less digits than its factorization.

140643513351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191261 (or 191252 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 140643513351 its reverse (153315346041), we get a palindrome (293958859392).

The spelling of 140643513351 in words is "one hundred forty billion, six hundred forty-three million, five hundred thirteen thousand, three hundred fifty-one".