7135857640 has 32 divisors (see below), whose sum is σ = 16753754880. Its totient is φ = 2730240832.

The previous prime is 7135857583. The next prime is 7135857643. The reversal of 7135857640 is 467585317.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (7135857643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3877264 + ... + 3879103.

It is an arithmetic number, because the mean of its divisors is an integer number (523554840).

Almost surely, 2^7135857640 is an apocalyptic number.

It is an amenable number.

7135857640 is an abundant number, since it is smaller than the sum of its proper divisors (9617897240).

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

7135857640 is a wasteful number, since it uses less digits than its factorization.

7135857640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7756401 (or 7756397 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 46.

The square root of 7135857640 is about 84474.0057058975. The cubic root of 7135857640 is about 1925.2275114244.

The spelling of 7135857640 in words is "seven billion, one hundred thirty-five million, eight hundred fifty-seven thousand, six hundred forty".