64356661050 has 96 divisors (see below), whose sum is σ = 175385542464. Its totient is φ = 15487680000.

The previous prime is 64356661049. The next prime is 64356661051. The reversal of 64356661050 is 5016665346.

It is an interprime number because it is at equal distance from previous prime (64356661049) and next prime (64356661051).

It is a junction number, because it is equal to n+sod(n) for n = 64356660993 and 64356661011.

It is not an unprimeable number, because it can be changed into a prime (64356661051) 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, 83700 + ... + 368400.

It is an arithmetic number, because the mean of its divisors is an integer number (1826932734).

Almost surely, 2^64356661050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64356661050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87692771232).

64356661050 is an abundant number, since it is smaller than the sum of its proper divisors (111028881414).

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

64356661050 is a wasteful number, since it uses less digits than its factorization.

64356661050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284864 (or 284859 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 64356661050 in words is "sixty-four billion, three hundred fifty-six million, six hundred sixty-one thousand, fifty".