140364434655 has 40 divisors (see below), whose sum is σ = 251966721600. Its totient is φ = 74756758464.

The previous prime is 140364434621. The next prime is 140364434657. The reversal of 140364434655 is 556434463041.

140364434655 is a `hidden beast` number, since 140 + 3 + 6 + 4 + 43 + 465 + 5 = 666.

It is not a de Polignac number, because 140364434655 - 2¹⁰ = 140364433631 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 140364434655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140364434657) 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, 50181 + ... + 532209.

It is an arithmetic number, because the mean of its divisors is an integer number (6299168040).

Almost surely, 2^140364434655 is an apocalyptic number.

140364434655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

140364434655 is a deficient number, since it is larger than the sum of its proper divisors (111602286945).

140364434655 is an equidigital number, since it uses as much as digits as its factorization.

140364434655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482765 (or 482756 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 45.

Adding to 140364434655 its reverse (556434463041), we get a palindrome (696798897696).

The spelling of 140364434655 in words is "one hundred forty billion, three hundred sixty-four million, four hundred thirty-four thousand, six hundred fifty-five".