7156640101 has 8 divisors (see below), whose sum is σ = 7713584984. Its totient is φ = 6600614400.

The previous prime is 7156640083. The next prime is 7156640137. The reversal of 7156640101 is 1010466517.

It can be written as a sum of positive squares in 4 ways, for example, as 28890625 + 7127749476 = 5375^2 + 84426^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7156640101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7156640201) 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, 213576 + ... + 244801.

It is an arithmetic number, because the mean of its divisors is an integer number (964198123).

Almost surely, 2^7156640101 is an apocalyptic number.

It is an amenable number.

7156640101 is a deficient number, since it is larger than the sum of its proper divisors (556944883).

7156640101 is a wasteful number, since it uses less digits than its factorization.

7156640101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459591.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 7156640101 is about 84596.9272550723. The cubic root of 7156640101 is about 1927.0947098182.

The spelling of 7156640101 in words is "seven billion, one hundred fifty-six million, six hundred forty thousand, one hundred one".