40649308512 has 96 divisors (see below), whose sum is σ = 108319680000. Its totient is φ = 13345059840.

The previous prime is 40649308463. The next prime is 40649308577. The reversal of 40649308512 is 21580394604.

40649308512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8128989 + ... + 8133987.

It is an arithmetic number, because the mean of its divisors is an integer number (1128330000).

Almost surely, 2^40649308512 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 40649308512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54159840000).

40649308512 is an abundant number, since it is smaller than the sum of its proper divisors (67670371488).

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

40649308512 is a wasteful number, since it uses less digits than its factorization.

40649308512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6276 (or 6268 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 40649308512 in words is "forty billion, six hundred forty-nine million, three hundred eight thousand, five hundred twelve".