1406143535640 has 64 divisors (see below), whose sum is σ = 4240516700160. Its totient is φ = 373008401280.

The previous prime is 1406143535627. The next prime is 1406143535647. The reversal of 1406143535640 is 465353416041.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1406143535592 and 1406143535601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406143535647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30652114 + ... + 30697953.

It is an arithmetic number, because the mean of its divisors is an integer number (66258073440).

Almost surely, 2^{1406143535640} is an apocalyptic number.

1406143535640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1406143535640 is an abundant number, since it is smaller than the sum of its proper divisors (2834373164520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1406143535640 is a wasteful number, since it uses less digits than its factorization.

1406143535640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61350272 (or 61350268 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 1406143535640 in words is "one trillion, four hundred six billion, one hundred forty-three million, five hundred thirty-five thousand, six hundred forty".