39961526480 has 40 divisors (see below), whose sum is σ = 92921973000. Its totient is φ = 15982645248.

The previous prime is 39961526477. The next prime is 39961526489. The reversal of 39961526480 is 8462516993.

It can be written as a sum of positive squares in 4 ways, for example, as 659256976 + 39302269504 = 25676^2 + 198248^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×39961526480² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39961526489) 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, 746036 + ... + 797804.

It is an arithmetic number, because the mean of its divisors is an integer number (2323049325).

Almost surely, 2^39961526480 is an apocalyptic number.

It is an amenable number.

39961526480 is an abundant number, since it is smaller than the sum of its proper divisors (52960446520).

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

39961526480 is a wasteful number, since it uses less digits than its factorization.

39961526480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61431 (or 61425 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 39961526480 in words is "thirty-nine billion, nine hundred sixty-one million, five hundred twenty-six thousand, four hundred eighty".