64158934950 has 192 divisors, whose sum is σ = 203017363200. Its totient is φ = 14735001600.

The previous prime is 64158934937. The next prime is 64158934951. The reversal of 64158934950 is 5943985146.

64158934950 is a `hidden beast` number, since 6 + 4 + 1 + 589 + 3 + 4 + 9 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64158934951) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 168454 + ... + 395846.

It is an arithmetic number, because the mean of its divisors is an integer number (1057382100).

Almost surely, 2^64158934950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64158934950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101508681600).

64158934950 is an abundant number, since it is smaller than the sum of its proper divisors (138858428250).

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

64158934950 is a wasteful number, since it uses less digits than its factorization.

64158934950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227444 (or 227433 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 64158934950 in words is "sixty-four billion, one hundred fifty-eight million, nine hundred thirty-four thousand, nine hundred fifty".