6355531640 has 16 divisors (see below), whose sum is σ = 14299946280. Its totient is φ = 2542212640.

The previous prime is 6355531639. The next prime is 6355531643. The reversal of 6355531640 is 461355536.

It is a junction number, because it is equal to n+sod(n) for n = 6355531594 and 6355531603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6355531643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79444106 + ... + 79444185.

Almost surely, 2^6355531640 is an apocalyptic number.

It is an amenable number.

6355531640 is an abundant number, since it is smaller than the sum of its proper divisors (7944414640).

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

6355531640 is a wasteful number, since it uses less digits than its factorization.

6355531640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158888302 (or 158888298 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 38.

The square root of 6355531640 is about 79721.5882932597. The cubic root of 6355531640 is about 1852.3254555100.

The spelling of 6355531640 in words is "six billion, three hundred fifty-five million, five hundred thirty-one thousand, six hundred forty".