7571040138 has 16 divisors (see below), whose sum is σ = 16824533760. Its totient is φ = 2523680028.

The previous prime is 7571040031. The next prime is 7571040149. The reversal of 7571040138 is 8310401757.

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, 70102170 + ... + 70102277.

It is an arithmetic number, because the mean of its divisors is an integer number (1051533360).

Almost surely, 2^7571040138 is an apocalyptic number.

7571040138 is an abundant number, since it is smaller than the sum of its proper divisors (9253493622).

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

7571040138 is a wasteful number, since it uses less digits than its factorization.

7571040138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140204458 (or 140204452 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 7571040138 is about 87011.7241410604. The cubic root of 7571040138 is about 1963.5946924273.

The spelling of 7571040138 in words is "seven billion, five hundred seventy-one million, forty thousand, one hundred thirty-eight".