140656209551 has 8 divisors (see below), whose sum is σ = 165246456144. Its totient is φ = 118033182720.

The previous prime is 140656209539. The next prime is 140656209583. The reversal of 140656209551 is 155902656041.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140656209551 is a prime.

It is a super-3 number, since 3×140656209551³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140656209151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491804786 + ... + 491805071.

It is an arithmetic number, because the mean of its divisors is an integer number (20655807018).

Almost surely, 2^140656209551 is an apocalyptic number.

140656209551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

140656209551 is a deficient number, since it is larger than the sum of its proper divisors (24590246593).

140656209551 is a wasteful number, since it uses less digits than its factorization.

140656209551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983609881.

The product of its (nonzero) digits is 324000, while the sum is 44.

The spelling of 140656209551 in words is "one hundred forty billion, six hundred fifty-six million, two hundred nine thousand, five hundred fifty-one".