1640572378201 has 8 divisors (see below), whose sum is σ = 1656550960064. Its totient is φ = 1624594771440.

The previous prime is 1640572378187. The next prime is 1640572378213. The reversal of 1640572378201 is 1028732750461.

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

It is a cyclic number.

It is not a de Polignac number, because 1640572378201 - 2³⁵ = 1606212639833 is a prime.

It is a super-3 number, since 3×1640572378201³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1640572478201) 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, 3401650 + ... + 3853876.

It is an arithmetic number, because the mean of its divisors is an integer number (207068870008).

Almost surely, 2^{1640572378201} is an apocalyptic number.

It is an amenable number.

1640572378201 is a deficient number, since it is larger than the sum of its proper divisors (15978581863).

1640572378201 is a wasteful number, since it uses less digits than its factorization.

1640572378201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487551.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 1640572378201 in words is "one trillion, six hundred forty billion, five hundred seventy-two million, three hundred seventy-eight thousand, two hundred one".