39853263642 has 64 divisors (see below), whose sum is σ = 85010477184. Its totient is φ = 12412108800.

The previous prime is 39853263617. The next prime is 39853263647. The reversal of 39853263642 is 24636235893.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (39853263647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10766392 + ... + 10770092.

It is an arithmetic number, because the mean of its divisors is an integer number (1328288706).

Almost surely, 2^39853263642 is an apocalyptic number.

39853263642 is an abundant number, since it is smaller than the sum of its proper divisors (45157213542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39853263642 is a wasteful number, since it uses less digits than its factorization.

39853263642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4463.

The product of its digits is 5598720, while the sum is 51.

The spelling of 39853263642 in words is "thirty-nine billion, eight hundred fifty-three million, two hundred sixty-three thousand, six hundred forty-two".