39667144020 has 96 divisors (see below), whose sum is σ = 127133750016. Its totient is φ = 9052569600.

The previous prime is 39667144019. The next prime is 39667144031. The reversal of 39667144020 is 2044176693.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195550 + ... + 342890.

It is an arithmetic number, because the mean of its divisors is an integer number (1324309896).

Almost surely, 2^39667144020 is an apocalyptic number.

39667144020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39667144020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63566875008).

39667144020 is an abundant number, since it is smaller than the sum of its proper divisors (87466605996).

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

39667144020 is a wasteful number, since it uses less digits than its factorization.

39667144020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148001 (or 147999 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 39667144020 in words is "thirty-nine billion, six hundred sixty-seven million, one hundred forty-four thousand, twenty".