39771450020 has 24 divisors (see below), whose sum is σ = 88432989624. Its totient is φ = 14972781056.

The previous prime is 39771450013. The next prime is 39771450023. The reversal of 39771450020 is 2005417793.

It can be written as a sum of positive squares in 4 ways, for example, as 3211715584 + 36559734436 = 56672^2 + 191206^2 .

It is a super-3 number, since 3×39771450020³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (39771450023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58487087 + ... + 58487766.

It is an arithmetic number, because the mean of its divisors is an integer number (3684707901).

Almost surely, 2^39771450020 is an apocalyptic number.

It is an amenable number.

39771450020 is an abundant number, since it is smaller than the sum of its proper divisors (48661539604).

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

39771450020 is a wasteful number, since it uses less digits than its factorization.

39771450020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116974879 (or 116974877 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 38.

The spelling of 39771450020 in words is "thirty-nine billion, seven hundred seventy-one million, four hundred fifty thousand, twenty".