64748132832 has 192 divisors, whose sum is σ = 189340732224. Its totient is φ = 19281346560.

The previous prime is 64748132831. The next prime is 64748132893. The reversal of 64748132832 is 23823184746.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64748132831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2462668 + ... + 2488820.

It is an arithmetic number, because the mean of its divisors is an integer number (986149647).

Almost surely, 2^64748132832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64748132832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94670366112).

64748132832 is an abundant number, since it is smaller than the sum of its proper divisors (124592599392).

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

64748132832 is a wasteful number, since it uses less digits than its factorization.

64748132832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26261 (or 26253 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 48.

The spelling of 64748132832 in words is "sixty-four billion, seven hundred forty-eight million, one hundred thirty-two thousand, eight hundred thirty-two".