39852665617401 has 48 divisors (see below), whose sum is σ = 70851203078656. Its totient is φ = 21020586991488.

The previous prime is 39852665617367. The next prime is 39852665617409. The reversal of 39852665617401 is 10471656625893.

It is a happy number.

39852665617401 is a `hidden beast` number, since 3 + 9 + 8 + 5 + 2 + 6 + 6 + 5 + 617 + 4 + 0 + 1 = 666.

It is not a de Polignac number, because 39852665617401 - 2⁹ = 39852665616889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39852665617409) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28819056 + ... + 30170238.

It is a 1-persistent number, because it is pandigital, but 2⋅39852665617401 = 79705331234802 is not.

Almost surely, 2^{39852665617401} is an apocalyptic number.

It is an amenable number.

39852665617401 is a deficient number, since it is larger than the sum of its proper divisors (30998537461255).

39852665617401 is a wasteful number, since it uses less digits than its factorization.

39852665617401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387222 (or 1387219 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 63.

The spelling of 39852665617401 in words is "thirty-nine trillion, eight hundred fifty-two billion, six hundred sixty-five million, six hundred seventeen thousand, four hundred one".