64864053450 has 384 divisors, whose sum is σ = 216057600000. Its totient is φ = 13978137600.

The previous prime is 64864053433. The next prime is 64864053491. The reversal of 64864053450 is 5435046846.

64864053450 is a `hidden beast` number, since 6 + 4 + 8 + 64 + 0 + 534 + 50 = 666.

64864053450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 64864053396 and 64864053405.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 43270801 + ... + 43272299.

It is an arithmetic number, because the mean of its divisors is an integer number (562650000).

Almost surely, 2^64864053450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64864053450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108028800000).

64864053450 is an abundant number, since it is smaller than the sum of its proper divisors (151193546550).

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

64864053450 is a wasteful number, since it uses less digits than its factorization.

64864053450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787 (or 1776 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

The spelling of 64864053450 in words is "sixty-four billion, eight hundred sixty-four million, fifty-three thousand, four hundred fifty".