64387229400 has 384 divisors, whose sum is σ = 246550886400. Its totient is φ = 15337382400.

The previous prime is 64387229371. The next prime is 64387229437. The reversal of 64387229400 is 492278346.

64387229400 is a `hidden beast` number, since 6 + 4 + 387 + 229 + 40 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2161407 + ... + 2190993.

It is an arithmetic number, because the mean of its divisors is an integer number (642059600).

Almost surely, 2^64387229400 is an apocalyptic number.

64387229400 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 64387229400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123275443200).

64387229400 is an abundant number, since it is smaller than the sum of its proper divisors (182163657000).

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

64387229400 is a wasteful number, since it uses less digits than its factorization.

64387229400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29656 (or 29641 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 64387229400 in words is "sixty-four billion, three hundred eighty-seven million, two hundred twenty-nine thousand, four hundred".