1640020402414 has 16 divisors (see below), whose sum is σ = 2483410354128. Its totient is φ = 812253625792.

The previous prime is 1640020402411. The next prime is 1640020402429. The reversal of 1640020402414 is 4142040200461.

It is a super-3 number, since 3×1640020402414³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640020402411) 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, 9079039 + ... + 9257914.

It is an arithmetic number, because the mean of its divisors is an integer number (155213147133).

Almost surely, 2^{1640020402414} is an apocalyptic number.

1640020402414 is a deficient number, since it is larger than the sum of its proper divisors (843389951714).

1640020402414 is a wasteful number, since it uses less digits than its factorization.

1640020402414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18337379.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1640020402414 its reverse (4142040200461), we get a palindrome (5782060602875).

The spelling of 1640020402414 in words is "one trillion, six hundred forty billion, twenty million, four hundred two thousand, four hundred fourteen".