75161401856 has 80 divisors (see below), whose sum is σ = 153849411936. Its totient is φ = 36672024576.

The previous prime is 75161401841. The next prime is 75161401879. The reversal of 75161401856 is 65810416157.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3660290 + ... + 3680766.

Almost surely, 2^75161401856 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 75161401856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76924705968).

75161401856 is an abundant number, since it is smaller than the sum of its proper divisors (78688010080).

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

75161401856 is a wasteful number, since it uses less digits than its factorization.

75161401856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20669 (or 20653 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 44.

The spelling of 75161401856 in words is "seventy-five billion, one hundred sixty-one million, four hundred one thousand, eight hundred fifty-six".