140515453661 has 12 divisors (see below), whose sum is σ = 154490822556. Its totient is φ = 127708278720.

The previous prime is 140515453609. The next prime is 140515453679. The reversal of 140515453661 is 166354515041.

It can be written as a sum of positive squares in 2 ways, for example, as 111426445636 + 29089008025 = 333806^2 + 170555^2 .

It is not a de Polignac number, because 140515453661 - 2⁶ = 140515453597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140515456661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 325721 + ... + 622193.

It is an arithmetic number, because the mean of its divisors is an integer number (12874235213).

Almost surely, 2^140515453661 is an apocalyptic number.

140515453661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140515453661 is a deficient number, since it is larger than the sum of its proper divisors (13975368895).

140515453661 is a wasteful number, since it uses less digits than its factorization.

140515453661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300412 (or 300401 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 140515453661 in words is "one hundred forty billion, five hundred fifteen million, four hundred fifty-three thousand, six hundred sixty-one".