1640006152251 has 8 divisors (see below), whose sum is σ = 2198755947024. Its totient is φ = 1087296896160.

The previous prime is 1640006152243. The next prime is 1640006152273. The reversal of 1640006152251 is 1522516000461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1640006152251 - 2³ = 1640006152243 is a prime.

It is a super-2 number, since 2×1640006152251² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1640006152201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1510134036 + ... + 1510135121.

It is an arithmetic number, because the mean of its divisors is an integer number (274844493378).

Almost surely, 2^{1640006152251} is an apocalyptic number.

1640006152251 is a deficient number, since it is larger than the sum of its proper divisors (558749794773).

1640006152251 is a wasteful number, since it uses less digits than its factorization.

1640006152251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020269341.

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 1640006152251 in words is "one trillion, six hundred forty billion, six million, one hundred fifty-two thousand, two hundred fifty-one".