64503437512734 has 96 divisors (see below), whose sum is σ = 153554943919104. Its totient is φ = 19406772095040.

The previous prime is 64503437512727. The next prime is 64503437512783. The reversal of 64503437512734 is 43721573430546.

64503437512734 is a `hidden beast` number, since 6 + 4 + 50 + 3 + 4 + 3 + 7 + 512 + 73 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23607547 + ... + 26197769.

It is an arithmetic number, because the mean of its divisors is an integer number (1599530665824).

Almost surely, 2^{64503437512734} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64503437512734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76777471959552).

64503437512734 is an abundant number, since it is smaller than the sum of its proper divisors (89051506406370).

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

64503437512734 is a wasteful number, since it uses less digits than its factorization.

64503437512734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591142 (or 2591139 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 54.

The spelling of 64503437512734 in words is "sixty-four trillion, five hundred three billion, four hundred thirty-seven million, five hundred twelve thousand, seven hundred thirty-four".