7100020643 has 16 divisors (see below), whose sum is σ = 7639902720. Its totient is φ = 6577029216.

The previous prime is 7100020639. The next prime is 7100020649. The reversal of 7100020643 is 3460200017.

It is a cyclic number.

It is not a de Polignac number, because 7100020643 - 2² = 7100020639 is a prime.

It is a super-2 number, since 2×7100020643² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7100020649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1142621 + ... + 1148817.

It is an arithmetic number, because the mean of its divisors is an integer number (477493920).

Almost surely, 2^7100020643 is an apocalyptic number.

7100020643 is a deficient number, since it is larger than the sum of its proper divisors (539882077).

7100020643 is a wasteful number, since it uses less digits than its factorization.

7100020643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7546.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 7100020643 is about 84261.6202253434. The cubic root of 7100020643 is about 1921.9992054861. Note that the first 3 decimals are identical.

The spelling of 7100020643 in words is "seven billion, one hundred million, twenty thousand, six hundred forty-three".