1640553165235 has 16 divisors (see below), whose sum is σ = 2029052299680. Its totient is φ = 1272576303360.

The previous prime is 1640553165191. The next prime is 1640553165253. The reversal of 1640553165235 is 5325613550461.

It is not a de Polignac number, because 1640553165235 - 2²⁵ = 1640519610803 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24514740 + ... + 24581569.

It is an arithmetic number, because the mean of its divisors is an integer number (126815768730).

Almost surely, 2^{1640553165235} is an apocalyptic number.

1640553165235 is a deficient number, since it is larger than the sum of its proper divisors (388499134445).

1640553165235 is a wasteful number, since it uses less digits than its factorization.

1640553165235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49096518.

The product of its (nonzero) digits is 1620000, while the sum is 46.

The spelling of 1640553165235 in words is "one trillion, six hundred forty billion, five hundred fifty-three million, one hundred sixty-five thousand, two hundred thirty-five".