140921726805 has 40 divisors (see below), whose sum is σ = 260764145664. Its totient is φ = 72733788000.

The previous prime is 140921726747. The next prime is 140921726809. The reversal of 140921726805 is 508627129041.

140921726805 is a `hidden beast` number, since 1 + 409 + 217 + 26 + 8 + 0 + 5 = 666.

It is not a de Polignac number, because 140921726805 - 2⁶ = 140921726741 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140921726809) 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, 5599621 + ... + 5624730.

Almost surely, 2^140921726805 is an apocalyptic number.

140921726805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140921726805 is a deficient number, since it is larger than the sum of its proper divisors (119842418859).

140921726805 is a wasteful number, since it uses less digits than its factorization.

140921726805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11224399 (or 11224390 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 140921726805 in words is "one hundred forty billion, nine hundred twenty-one million, seven hundred twenty-six thousand, eight hundred five".