7156217160061 has 4 divisors (see below), whose sum is σ = 7156258646400. Its totient is φ = 7156175673724.

The previous prime is 7156217160041. The next prime is 7156217160067. The reversal of 7156217160061 is 1600617126517.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7156217160061 - 2⁹ = 7156217159549 is a prime.

It is a super-2 number, since 2×7156217160061² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7156217160067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20483341 + ... + 20829778.

It is an arithmetic number, because the mean of its divisors is an integer number (1789064661600).

Almost surely, 2^{7156217160061} is an apocalyptic number.

It is an amenable number.

7156217160061 is a deficient number, since it is larger than the sum of its proper divisors (41486339).

7156217160061 is a wasteful number, since it uses less digits than its factorization.

7156217160061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41486338.

The product of its (nonzero) digits is 105840, while the sum is 43.

The spelling of 7156217160061 in words is "seven trillion, one hundred fifty-six billion, two hundred seventeen million, one hundred sixty thousand, sixty-one".