64154834040 has 192 divisors, whose sum is σ = 212247060480. Its totient is φ = 15501587200.

The previous prime is 64154834017. The next prime is 64154834041. The reversal of 64154834040 is 4043845146.

It is a self number, because there is not a number n which added to its sum of digits gives 64154834040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64154834041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4508617 + ... + 4522823.

It is an arithmetic number, because the mean of its divisors is an integer number (1105453440).

Almost surely, 2^64154834040 is an apocalyptic number.

64154834040 is a gapful number since it is divisible by the number (60) 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 64154834040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106123530240).

64154834040 is an abundant number, since it is smaller than the sum of its proper divisors (148092226440).

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

64154834040 is a wasteful number, since it uses less digits than its factorization.

64154834040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14554 (or 14539 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 39.

The spelling of 64154834040 in words is "sixty-four billion, one hundred fifty-four million, eight hundred thirty-four thousand, forty".