75138344736 has 192 divisors, whose sum is σ = 244213014528. Its totient is φ = 19697660928.

The previous prime is 75138344717. The next prime is 75138344741. The reversal of 75138344736 is 63744383157.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1433161 + ... + 1484663.

It is an arithmetic number, because the mean of its divisors is an integer number (1271942784).

Almost surely, 2^75138344736 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 75138344736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122106507264).

75138344736 is an abundant number, since it is smaller than the sum of its proper divisors (169074669792).

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

75138344736 is a wasteful number, since it uses less digits than its factorization.

75138344736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51703 (or 51695 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 51.

The spelling of 75138344736 in words is "seventy-five billion, one hundred thirty-eight million, three hundred forty-four thousand, seven hundred thirty-six".