1640285149396 has 24 divisors (see below), whose sum is σ = 2877536728640. Its totient is φ = 818132337792.

The previous prime is 1640285149379. The next prime is 1640285149397. The reversal of 1640285149396 is 6939415820461.

It is a self number, because there is not a number n which added to its sum of digits gives 1640285149396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640285149397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12855505 + ... + 12982471.

Almost surely, 2^{1640285149396} is an apocalyptic number.

It is an amenable number.

1640285149396 is a deficient number, since it is larger than the sum of its proper divisors (1237251579244).

1640285149396 is a wasteful number, since it uses less digits than its factorization.

1640285149396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134863 (or 134861 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 58.

The spelling of 1640285149396 in words is "one trillion, six hundred forty billion, two hundred eighty-five million, one hundred forty-nine thousand, three hundred ninety-six".