39461232640 has 224 divisors, whose sum is σ = 99084384000. Its totient is φ = 15067250688.

The previous prime is 39461232617. The next prime is 39461232647. The reversal of 39461232640 is 4623216493.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 39461232593 and 39461232602.

It is not an unprimeable number, because it can be changed into a prime (39461232647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165109641 + ... + 165109879.

It is an arithmetic number, because the mean of its divisors is an integer number (442341000).

Almost surely, 2^39461232640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39461232640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49542192000).

39461232640 is an abundant number, since it is smaller than the sum of its proper divisors (59623151360).

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

39461232640 is a wasteful number, since it uses less digits than its factorization.

39461232640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 40.

The spelling of 39461232640 in words is "thirty-nine billion, four hundred sixty-one million, two hundred thirty-two thousand, six hundred forty".