840202153445 has 8 divisors (see below), whose sum is σ = 1067550971544. Its totient is φ = 632622797824.

The previous prime is 840202153429. The next prime is 840202153459. The reversal of 840202153445 is 544351202048.

It can be written as a sum of positive squares in 4 ways, for example, as 6298961956 + 833903191489 = 79366^2 + 913183^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 840202153445 - 2⁴ = 840202153429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 840202153399 and 840202153408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4942365524 + ... + 4942365693.

It is an arithmetic number, because the mean of its divisors is an integer number (133443871443).

Almost surely, 2^840202153445 is an apocalyptic number.

840202153445 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

840202153445 is a deficient number, since it is larger than the sum of its proper divisors (227348818099).

840202153445 is a wasteful number, since it uses less digits than its factorization.

840202153445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9884731239.

The product of its (nonzero) digits is 153600, while the sum is 38.

The spelling of 840202153445 in words is "eight hundred forty billion, two hundred two million, one hundred fifty-three thousand, four hundred forty-five".