39573996420 has 288 divisors, whose sum is σ = 136361933568. Its totient is φ = 8532615168.

The previous prime is 39573996403. The next prime is 39573996439. The reversal of 39573996420 is 2469937593.

It is a happy number.

It is a super-2 number, since 2×39573996420² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4932252 + ... + 4940268.

It is an arithmetic number, because the mean of its divisors is an integer number (473478936).

Almost surely, 2^39573996420 is an apocalyptic number.

39573996420 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 39573996420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68180966784).

39573996420 is an abundant number, since it is smaller than the sum of its proper divisors (96787937148).

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

39573996420 is a wasteful number, since it uses less digits than its factorization.

39573996420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8139 (or 8130 counting only the distinct ones).

The product of its (nonzero) digits is 11022480, while the sum is 57.

The spelling of 39573996420 in words is "thirty-nine billion, five hundred seventy-three million, nine hundred ninety-six thousand, four hundred twenty".