39851369538423 has 32 divisors (see below), whose sum is σ = 57052788865536. Its totient is φ = 24678366691968.

The previous prime is 39851369538371. The next prime is 39851369538439. The reversal of 39851369538423 is 32483596315893.

It is not a de Polignac number, because 39851369538423 - 2⁶ = 39851369538359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39851369538473) 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, 13587940 + ... + 16258377.

It is an arithmetic number, because the mean of its divisors is an integer number (1782899652048).

Almost surely, 2^{39851369538423} is an apocalyptic number.

39851369538423 is a deficient number, since it is larger than the sum of its proper divisors (17201419327113).

39851369538423 is a wasteful number, since it uses less digits than its factorization.

39851369538423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29846903.

The product of its digits is 503884800, while the sum is 69.

The spelling of 39851369538423 in words is "thirty-nine trillion, eight hundred fifty-one billion, three hundred sixty-nine million, five hundred thirty-eight thousand, four hundred twenty-three".