140120651205 has 12 divisors (see below), whose sum is σ = 242875795500. Its totient is φ = 74731013952.

The previous prime is 140120651189. The next prime is 140120651213. The reversal of 140120651205 is 502156021041.

140120651205 is a `hidden beast` number, since 1 + 4 + 0 + 1 + 2 + 0 + 651 + 2 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24672241476 + 115448409729 = 157074^2 + 339777^2 .

It is not a de Polignac number, because 140120651205 - 2⁴ = 140120651189 is a prime.

It is a super-2 number, since 2×140120651205² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1556896080 + ... + 1556896169.

It is an arithmetic number, because the mean of its divisors is an integer number (20239649625).

Almost surely, 2^140120651205 is an apocalyptic number.

140120651205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140120651205 is a deficient number, since it is larger than the sum of its proper divisors (102755144295).

140120651205 is a wasteful number, since it uses less digits than its factorization.

140120651205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113792260 (or 3113792257 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 140120651205 its reverse (502156021041), we get a palindrome (642276672246).

The spelling of 140120651205 in words is "one hundred forty billion, one hundred twenty million, six hundred fifty-one thousand, two hundred five".