7151428643729 has 8 divisors (see below), whose sum is σ = 7159432137000. Its totient is φ = 7143429347712.

The previous prime is 7151428643713. The next prime is 7151428643743. The reversal of 7151428643729 is 9273468241517.

It can be written as a sum of positive squares in 4 ways, for example, as 430645504 + 7150997998225 = 20752^2 + 2674135^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7151428643729 - 2⁴ = 7151428643713 is a prime.

It is a super-2 number, since 2×7151428643729² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7151428643789) 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, 2366477 + ... + 4461285.

It is an arithmetic number, because the mean of its divisors is an integer number (894929017125).

Almost surely, 2^{7151428643729} is an apocalyptic number.

It is an amenable number.

7151428643729 is a deficient number, since it is larger than the sum of its proper divisors (8003493271).

7151428643729 is a wasteful number, since it uses less digits than its factorization.

7151428643729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098627.

The product of its digits is 20321280, while the sum is 59.

The spelling of 7151428643729 in words is "seven trillion, one hundred fifty-one billion, four hundred twenty-eight million, six hundred forty-three thousand, seven hundred twenty-nine".