1406154351645 has 24 divisors (see below), whose sum is σ = 2515957896192. Its totient is φ = 725757084000.

The previous prime is 1406154351607. The next prime is 1406154351677. The reversal of 1406154351645 is 5461534516041.

1406154351645 is a `hidden beast` number, since 1 + 4 + 0 + 61 + 543 + 5 + 1 + 6 + 45 = 666.

It is not a de Polignac number, because 1406154351645 - 2¹⁷ = 1406154220573 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 1406154351645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 503996581 + ... + 503999370.

It is an arithmetic number, because the mean of its divisors is an integer number (104831579008).

Almost surely, 2^{1406154351645} is an apocalyptic number.

1406154351645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1406154351645 is a deficient number, since it is larger than the sum of its proper divisors (1109803544547).

1406154351645 is a wasteful number, since it uses less digits than its factorization.

1406154351645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007995993 (or 1007995990 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

Adding to 1406154351645 its reverse (5461534516041), we get a palindrome (6867688867686).

The spelling of 1406154351645 in words is "one trillion, four hundred six billion, one hundred fifty-four million, three hundred fifty-one thousand, six hundred forty-five".